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Title | Author | Supervisor |
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Statistical Methods for the Analysis and Prediction of Hierarchical Time Series Data with Applications to Demography | ||
Exponential Family Models for Rich Preference Ranking Data | ||
Bayesian methods for variable selection | , | |
Statistical methods for genomic sequencing data | ||
Methods for the Statistical Analysis of Preferences, with Applications to Social Science Data | ||
Estimating subnational health and demographic indicators using complex survey data | ||
Inference and Estimation for Network Data | ||
Mixture models to fit heavy-tailed, heterogeneous or sparse data | , | |
Addressing double dipping through selective inference and data thinning | ||
Interpretation and Validation for unsupervised learning |
Title | Author | Supervisor |
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Likelihood-based haplotype frequency modeling using variable-order Markov chains | ||
Statistical Divergences for Learning and Inference: Limit Laws and Non-Asymptotic Bounds | , | |
Statistical Methods for Clustering and High Dimensional Time Series Analysis | ||
Causal Structure Learning in High Dimensions | , | |
Missing Data Methods for Observational Health Dataset | ||
Methods, Models, and Interpretations for Spatial-Temporal Public Health Applications | ||
Geometric algorithms for interpretable manifold learning |
Title | Author | Supervisor |
---|---|---|
Improving Uncertainty Quantification and Visualization for Spatiotemporal Earthquake Rate Models for the Pacific Northwest | , | |
Statistical modeling of long memory and uncontrolled effects in neural recordings | ||
Distribution-free consistent tests of independence via marginal and multivariate ranks | ||
Causality, Fairness, and Information in Peer Review | , | |
Subnational Estimation of Period Child Mortality in a Low and Middle Income Countries Context | ||
Progress in nonparametric minimax estimation and high dimensional hypothesis testing | , | |
Likelihood Analysis of Causal Models | ||
Bayesian Models in Population Projections and Climate Change Forecast |
Title | Author | Supervisor |
---|---|---|
Statistical Methods for Adaptive Immune Receptor Repertoire Analysis and Comparison | ||
Statistical Methods for Geospatial Modeling with Stratified Cluster Survey Data | ||
Representation Learning for Partitioning Problems | ||
Space-Time Contour Models for Sea Ice Forecasting | , | |
Non-Gaussian Graphical Models: Estimation with Score Matching and Causal Discovery under Zero-Inflation | , | |
Estimation and Inference in Changepoint Models | ||
Scalable Learning in Latent State Sequence Models |
Title | Author | Supervisor |
---|---|---|
Bayesian Hierarchical Models and Moment Bounds for High-Dimensional Time Series | , | |
Latent Variable Models for Prediction & Inference with Proxy Network Measures | ||
Inferring network structure from partially observed graphs | ||
Fitting Stochastics Epidemic Models to Multiple Data Types | ||
Realized genome sharing in random effects models for quantitative genetic traits | ||
Estimation and testing under shape constraints | , | |
Large-Scale B Cell Receptor Sequence Analysis Using Phylogenetics and Machine Learning | ||
Statistical Methods for Manifold Recovery and C^ (1, 1) Regression on Manifolds |
Title | Author | Supervisor |
---|---|---|
Topics in Statistics and Convex Geometry: Rounding, Sampling, and Interpolation | ||
Topics on Least Squares Estimation | ||
Discovering Interaction in Multivariate Time Series | ||
Nonparametric inference on monotone functions, with applications to observational studies | ||
Estimation and Testing Following Model Selection | ||
Bayesian Methods for Graphical Models with Limited Data | ||
Model-Based Penalized Regression | ||
Parameter Identification and Assessment of Independence in Multivariate Statistical Modeling | ||
Preferential sampling and model checking in phylodynamic inference | ||
Linear Structural Equation Models with Non-Gaussian Errors: Estimation and Discovery | ||
Coevolution Regression and Composite Likelihood Estimation for Social Networks |
Title | Author | Supervisor |
---|---|---|
"Topics in Graph Clustering" | ||
"Methods for Estimation and Inference for High-Dimensional Models" | , | |
"Scalable Methods for the Inference of Identity by Descent" | ||
"Applications of Robust Statistical Methods in Quantitative Finance" | ||
"Scalable Manifold Learning and Related Topics" |
Title | Author | Supervisor |
---|---|---|
"Likelihood-Based Inference for Partially Observed Multi-Type Markov Branching Processes" | ||
"Bayesian Methods for Inferring Gene Regulatory Networks" | , | |
"Finite Sampling Exponential Bounds" | ||
"Finite Population Inference for Causal Parameters" | ||
"Projection and Estimation of International Migration" | ||
"Statistical Hurdle Models for Single Cell Gene Expression: Differential Expression and Graphical Modeling" | ||
"Space-Time Smoothing Models for Surveillance and Complex Survey Data" | ||
"Testing Independence in High Dimensions & Identifiability of Graphical Models" |
Title | Author | Supervisor |
---|---|---|
"Degeneracy, Duration, and Co-Evolution: Extending Exponential Random Graph Models (ERGM) for Social Network Analysis" | ||
"The Likelihood Pivot: Performing Inference with Confidence" | ||
"Lord's Paradox and Targeted Interventions: The Case of Special Education" | , | |
"Bayesian Modeling of a High Resolution Housing Price Index" | ||
"Phylogenetic Stochastic Mapping" | ||
"Theory and Methods for Tensor Data" | ||
"Discrete-Time Threshold Regression for Survival Data with Time-Dependent Covariates" |
Title | Author | Supervisor |
---|---|---|
"Monte Carlo Estimation of Identity by Descent in Populations" | ||
"Bayesian Spatial and Temporal Methods for Public Health Data" | , | |
"Functional Quantitative Genetics and the Missing Heritability Problem" | ||
"Predictive Modeling of Cholera Outbreaks in Bangladesh" | , | |
"Gravimetric Anomaly Detection Using Compressed Sensing" | ||
"R-Squared Inference Under Non-Normal Error" |
Title | Author | Supervisor |
---|---|---|
"Bayesian Population Reconstruction: A Method for Estimating Age- and Sex-Specific Vital Rates and Population Counts with Uncertainty from Fragmentary Data" | ||
"Bayesian Nonparametric Inference of Effective Population Size Trajectories from Genomic Data" | ||
"Modeling Heterogeneity Within and Between Matrices and Arrays" | ||
"Shape-Constrained Inference for Concave-Transformed Densities and their Modes" | ||
"Statistical Inference Using Kronecker Structured Covariance" | ||
"Learning and Manifolds: Leveraging the Intrinsic Geometry" | ||
"An Algorithmic Framework for High Dimensional Regression with Dependent Variables" |
Title | Author | Supervisor |
---|---|---|
"Bayesian Modeling of Health Data in Space and Time" | ||
"Coordinate-Free Exponential Families on Contingency Tables" | , | |
"Bayesian Modeling For Multivariate Mixed Outcomes With Applications To Cognitive Testing Data" | ||
"Tests for Differences between Least Squares and Robust Regression Parameter Estimates and Related To Pics" |
Title | Author | Supervisor |
---|---|---|
"Statistical Models for Estimating and Predicting HIV/AIDS Epidemics" | ||
"Modeling the Game of Soccer Using Potential Functions" | ||
"Parametrizations of Discrete Graphical Models" | ||
"A Bayesian Surveillance System for Detecting Clusters of Non-Infectious Diseases" | ||
"Statistical Approaches to Analyze Mass Spectrometry Data Graduating Year" | , | |
"Seeing the trees through the forest; a competition model for growth and mortality" | ||
"Bayesian Inference of Exponential-family Random Graph Models for Social Networks" |
Title | Author | Supervisor |
---|---|---|
"Portfolio Optimization with Tail Risk Measures and Non-Normal Returns" | ||
"Convex analysis methods in shape constrained estimation." | ||
"Estimating social contact networks to improve epidemic simulation models" | ||
"Multivariate Geostatistics and Geostatistical Model Averaging" | ||
"Covariance estimation in the Presence of Diverse Types of Data" |
Title | Author | Supervisor |
---|---|---|
"Bayesian Model Averaging and Multivariate Conditional Independence Structures" | ||
"Conditional tests for localizing trait genes" | ||
"Combining and Evaluating Probabilistic Forecasts" | ||
"Probabilistic weather forecasting using Bayesian model averaging" | ||
"Statistical Analysis of Portfolio Risk and Performance Measures: the Influence Function Approach" | ||
"Factor Model Monte Carlo Methods for General Fund-of-Funds Portfolio Management" | ||
"Statistical Models for Social Network Data and Processes" | ||
"Models for Heterogeneity in Heterosexual Partnership Networks" | ||
"A comparison of alternative methodologies for estimation of HIV incidence" |
Title | Author | Supervisor |
---|---|---|
"Estimates and projections of the total fertility rate" | ||
"Nonparametric estimation of multivariate monotone densities" | ||
"Learning transcriptional regulatory networks from the integration of heterogeneous high-throughout data" | ||
"Extensions of Latent Class Transition Models with Application to Chronic Disability Survey Data" | ||
"Statistical Solutions to Some Problems in Medical Imaging" | , | |
"Statistical methods for peptide and protein identification using mass spectrometry" | ||
"Inference from partially-observed network data" | ||
"Models and Inference of Transmission of DNA Methylation Patterns in Mammalian Somatic Cells" |
Title | Author | Supervisor |
---|---|---|
"Probabilistic weather forecasting with spatial dependence" | ||
"Wavelet variance analysis for time series and random fields" | , | |
"Bayesian hierarchical curve registration" | ||
""Up-and-Down" and the Percentile-Finding Problem" | ||
"Statistical Methodology for Longitudinal Social Network Data" |
Title | Author | Supervisor |
---|---|---|
"Algorithms for Estimating the Cluster Tree of a Density" | ||
"Likelihood inference for population structure, using the coalescent" | ||
"Exploring rates and patterns of variability in gene conversion and crossover in the human genome" | ||
"Alleviating ecological bias in generalized linear models and optimal design with subsample data" | , | |
"Nonparametric estimation for current status data with competing risks" | , | |
"Goodness-of-fit statistics based on phi-divergences" | ||
"An efficient and flexible model for patterns of population genetic variation" | ||
"Learning in Spectral Clustering" | ||
"Variable selection and other extensions of the mixture model clustering framework" |
Title | Author | Supervisor |
---|---|---|
"Alternative models for estimating genetic maps from pedigree data" | ||
"Allele-sharing methods for linkage detection using extended pedigrees" | ||
"Robust estimation of factor models in finance" | ||
"Using the structure of d-connecting paths as a qualitative measure of the strength of dependence" | , | |
"Alternative estimators of wavelet variance" | , , | |
"Bayesian robust analysis of gene expression microarray data" |
Title | Author | Supervisor |
---|---|---|
"Maximum likelihood estimation in Gaussian AMP chain graph models and Gaussian ancestral graph models" | , | |
"Nonparametric estimation of a k-monotone density: A new asymptotic distribution theory" |
Title | Author | Supervisor |
---|---|---|
"The genetic structure of related recombinant lines" | ||
"Joint relationship inference from three or more individuals in the presence of genotyping error" | ||
"Personal characteristics and covariate measurement error in disease risk estimation" | , | |
"Model based and hybrid clustering of large datasets" | , |
Title | Author | Supervisor |
---|---|---|
"Applying graphical models to partially observed data-generating processes" | , | |
"Generalized linear mixed models: development and comparison of different estimation methods" | ||
"Practical importance sampling methods for finite mixture models and multiple imputation" |
Title | Author | Supervisor |
---|---|---|
"Modeling recessive lethals: An explanation for excess sharing in siblings" | ||
"Estimation with bivariate interval censored data" | ||
"Latent models for cross-covariance" | , | |
"Bayesian inference for deterministic simulation models for environmental assessment" |
Title | Author | Supervisor |
---|---|---|
"Likelihood inference for parameteric models of dispersal" | ||
"Bayesian inference in hidden stochastic population processes" | ||
"Logic regression and statistical issues related to the protein folding problem" | , | |
"Likelihood ratio inference in regular and non-regular problems" | ||
"Estimating the association between airborne particulate matter and elderly mortality in Seattle, Washington using Bayesian Model Averaging" | , | |
"Nonhomogeneous hidden Markov models for downscaling synoptic atmospheric patterns to precipitation amounts" | , | |
"Detecting and extracting complex patterns from images and realizations of spatial point processes" | ||
"A model selection approach to partially linear regression" | ||
"Wavelet-based estimation for trend contaminated long memory processes" | , | |
"Global covariance modeling: A deformation approach to anisotropy" |
Title | Author | Supervisor |
---|---|---|
"Monte Carlo likelihood calculation for identity by descent data" | ||
"Fast automatic unsupervised image segmentation and curve detection in spatial point processes" | ||
"Semiparametric inference based on estimating equations in regressions models for two phase outcome dependent sampling" | , | |
"Capture-recapture estimation of bowhead whale population size using photo-identification data" | , | |
"Lifetime and disease onset distributions from incomplete observations" | ||
"Statistical approaches to distinct value estimation" | , | |
"Generalization of boosting algorithms and applications of Bayesian inference for massive datasets" | , | |
"Bayesian inference for noninvertible deterministic simulation models, with application to bowhead whale assessment" |
Title | Author | Supervisor |
---|---|---|
"Assessing nonstationary time series using wavelets" | , | |
"Lattice conditional independence models for incomplete multivariate data and for seemingly unrelated regressions" | , | |
"Estimation for counting processes with incomplete data" | ||
"Regularization techniques for linear regression with a large set of carriers" | ||
"Large sample theory for pseudo maximum likelihood estimates in semiparametric models" | ||
"Additive mixture models for multichannel image data" | ||
"Application of ridge regression for improved estimation of parameters in compartmental models" | ||
"Bayesian modeling of highly structured systems using Markov chain Monte Carlo" |
Title | Author | Supervisor |
---|---|---|
"Bayesian information retrieval" | ||
"Statistical inference for partially observed markov population processes" | ||
"Tools for the advancement of undergraduate statistics education" | ||
"A new learning procedure in acyclic directed graphs" | ||
"Phylogenies via conditional independence modeling" | ||
"Bayesian model averaging in censored survival models" |
Title | Author | Supervisor |
---|---|---|
"Variability estimation in linear inverse problems" | ||
"Inference in a discrete parameter space" | ||
"Bootstrapping functional m-estimators" |
Title | Author | Supervisor |
---|---|---|
"Statistical analysis of biological monitoring data: State-space models for species compositions" | ||
"Estimation of heterogeneous space-time covariance" | ||
"Semiparametric estimation of major gene and random environmental effects for age of onset" |
Title | Author | Supervisor |
---|---|---|
"Spatial applications of Markov chain Monte Carlo for bayesian inference" | ||
"Accounting for model uncertainty in linear regression" | ||
"Robust estimation in point processes" | ||
"Multilevel modeling of discrete event history data using Markov chain Monte Carlo methods" | ||
"Estimation in regression models with interval censoring" |
Title | Author | Supervisor |
---|---|---|
"The Poisson clumping heuristic and the survival of genome in small pedigrees" | ||
"Markov chain Monte Carlo estimates of probabilities on complex structures" | ||
"A class of stochastic models for relating synoptic atmospheric patterns to local hydrologic phenomena" | ||
"A Bayesian framework and importance sampling methods for synthesizing multiple sources of evidence and uncertainty linked by a complex mechanistic model" | ||
"State-space modeling of salmon migration and Monte Carlo Alternatives to the Kalman filter" |
Title | Author | Supervisor |
---|---|---|
"Auxiliary and missing covariate problems in failure time regression analysis" | ||
"A high order hidden markov model" | ||
"Bayesian methods for the analysis of misclassified or incomplete multivariate discrete data" |
Title | Author | Supervisor |
---|---|---|
"General-weights bootstrap of the empirical process" | ||
"The weighted likelihood bootstrap and an algorithm for prepivoting" |
Title | Author | Supervisor |
---|---|---|
"Modelling agricultural field trials in the presence of outliers and fertility jumps" | ||
"Modeling and bootstrapping for non-gaussian time series" | ||
"Genetic restoration on complex pedigrees" | ||
"Incorporating covariates into a beta-binomial model with applications to medicare policy: A Bayes/empirical Bayes approach" | ||
"Likelihood and exponential families" |
Title | Author | Supervisor |
---|---|---|
"Estimation of mixing and mixed distributions" | ||
"Classical inference in spatial statistics" |
Title | Author | Supervisor |
---|---|---|
"Aspects of robust analysis in designed experiments" | ||
"Diagnostics for time series models" | ||
"Constrained cluster analysis and image understanding" | ||
"Exploratory methods for censored data" |
Title | Author | Supervisor |
---|---|---|
"The data viewer: A program for graphical data analysis" | ||
"Additive principal components: A method for estimating additive constraints with small variance from multivariate data" | ||
"Kullback-Leibler estimation of probability measures with an application to clustering" | ||
"Time series models for continuous proportions" |
Title | Author | Supervisor |
---|---|---|
"A computer system for Monte Carlo experimentation" | ||
"Estimation for infinite variance autoregressive processes" |
Title | Author | Supervisor |
---|---|---|
"Robust estimation for the errors-in-variables model" | ||
"Robust statistics on compact metric spaces" | ||
"Weak convergence and a law of the iterated logarithm for processes indexed by points in a metric space" |
Title | Author | Supervisor |
---|---|---|
"The statistics of long memory processes" |
There are a dizzying number of statistical tests out there and knowing where to start can be a real problem. You probably haven’t taken a statistics class in years and now you are being called upon to recall statistical tests and details that you believe even a statistician would not know. Fear not! Read on and click through to get all the help you need.
Dissertation statistics and thesis statistics are the statistics used in a dissertation or thesis… just kidding – okay seriously. You have spent all kinds of time on the internet and the library completing this epic task only to hit the wall of………statistics.
There are all kinds of statistics you could use for your Master’s thesis, Master’s dissertation, Ph.D. thesis, and Ph.D. dissertation. These days, it is assumed and maybe required that you use multivariate statistics of some kind. The days of simple bivariate correlations and t -tests seem to be gone forever – depending on the area of expertise. Given the increased level of familiarity with the tests like multiple regression , logistic regression , n -way ANOVA , mixed ANOVA , ANCOVA , MANOVA , MANCOVA , and the like, institutions and committee members’ expectations for you thesis or dissertation are much higher. The individual tests, their benefits, and their uses are described in some more detail here .
The statistical analysis for your thesis or dissertation should be appropriate for what you are researching and should fit with your needs and capabilities. I know, that’s not saying much, but it’s important that you’re comfortable with the statistical analysis you will be conducting. An experienced dissertation consultant will help you tremendously with this. You will find a great one here .
I am going to go briefly cover why multivariate analysis are so popular with institutions and committees, but before your head explodes, keep in mind that seeking professional help will simplify this greatly by saving you the hours of researching the tests and revising if – God forbid – the tests are run incorrectly. In the end, an experienced dissertation consultant is worth his weight in gold.
The main thing multivariate statistics do is protect your alpha. Something happens when you conduct multiple tests on the same dataset, e.g. t- tests and correlations: you run the risk of the statistical tests being falsely significant simply because multiple tests were conducted on the dataset. In other words, your statistical tests may show significance even though they aren’t.
There are corrections for this like the Bonferroni correction , however, a researcher can avoid the stringent thresholds that follow with implementation of the Bonferroni correction by simply conducting multivariate statistics for their dissertation or thesis. Instead of conducting multiple tests on the same dataset, maybe only one or two tests are conducted. Get help using multivariate statistics with your Master’s thesis, Master’s dissertation, Ph.D. thesis, or Ph.D. dissertation.
We work with graduate students every day and know what it takes to get your research approved.
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The mean, the mode, the median, the range, and the standard deviation are all examples of descriptive statistics. Descriptive statistics are used because in most cases, it isn't possible to present all of your data in any form that your reader will be able to quickly interpret.
Generally, when writing descriptive statistics, you want to present at least one form of central tendency (or average), that is, either the mean, median, or mode. In addition, you should present one form of variability , usually the standard deviation.
The mean, median, and the mode are all measures of central tendency. They attempt to describe what the typical data point might look like. In essence, they are all different forms of 'the average.' When writing statistics, you never want to say 'average' because it is difficult, if not impossible, for your reader to understand if you are referring to the mean, the median, or the mode.
The mean is the most common form of central tendency, and is what most people usually are referring to when the say average. It is simply the total sum of all the numbers in a data set, divided by the total number of data points. For example, the following data set has a mean of 4: {-1, 0, 1, 16}. That is, 16 divided by 4 is 4. If there isn't a good reason to use one of the other forms of central tendency, then you should use the mean to describe the central tendency.
The median is simply the middle value of a data set. In order to calculate the median, all values in the data set need to be ordered, from either highest to lowest, or vice versa. If there are an odd number of values in a data set, then the median is easy to calculate. If there is an even number of values in a data set, then the calculation becomes more difficult. Statisticians still debate how to properly calculate a median when there is an even number of values, but for most purposes, it is appropriate to simply take the mean of the two middle values. The median is useful when describing data sets that are skewed or have extreme values. Incomes of baseballs players, for example, are commonly reported using a median because a small minority of baseball players makes a lot of money, while most players make more modest amounts. The median is less influenced by extreme scores than the mean.
The mode is the most commonly occurring number in the data set. The mode is best used when you want to indicate the most common response or item in a data set. For example, if you wanted to predict the score of the next football game, you may want to know what the most common score is for the visiting team, but having an average score of 15.3 won't help you if it is impossible to score 15.3 points. Likewise, a median score may not be very informative either, if you are interested in what score is most likely.
The standard deviation is a measure of variability (it is not a measure of central tendency). Conceptually it is best viewed as the 'average distance that individual data points are from the mean.' Data sets that are highly clustered around the mean have lower standard deviations than data sets that are spread out.
For example, the first data set would have a higher standard deviation than the second data set:
Notice that both groups have the same mean (5) and median (also 5), but the two groups contain different numbers and are organized much differently. This organization of a data set is often referred to as a distribution. Because the two data sets above have the same mean and median, but different standard deviation, we know that they also have different distributions. Understanding the distribution of a data set helps us understand how the data behave.
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Advances in empirical bayes modeling and bayesian computation , advances in statistical network modeling and nonlinear time series modeling , advances in the normal-normal hierarchical model , analysis, modeling, and optimal experimental design under uncertainty: from carbon nano-structures to 3d printing , bayesian biclustering on discrete data: variable selection methods , bayesian learning of relationships , a bayesian perspective on factorial experiments using potential outcomes , building interpretable models: from bayesian networks to neural networks , causal inference under network interference: a framework for experiments on social networks , complications in causal inference: incorporating information observed after treatment is assigned , diagnostic tools in missing data and causal inference on time series , dilemmas in design: from neyman and fisher to 3d printing , distributed and multiphase inference in theory and practice: principles, modeling, and computation for high-throughput science , essays in causal inference and public policy , expediting scientific discoveries with bayesian statistical methods , exploring objective causal inference in case-noncase studies under the rubin causal model , exploring the role of randomization in causal inference , extensions of randomization-based methods for causal inference , g-squared statistic for detecting dependence, additive modeling, and calibration concordance for astrophysical data .
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Published on July 9, 2020 by Pritha Bhandari . Revised on June 21, 2023.
Descriptive statistics summarize and organize characteristics of a data set. A data set is a collection of responses or observations from a sample or entire population.
In quantitative research , after collecting data, the first step of statistical analysis is to describe characteristics of the responses, such as the average of one variable (e.g., age), or the relation between two variables (e.g., age and creativity).
The next step is inferential statistics , which help you decide whether your data confirms or refutes your hypothesis and whether it is generalizable to a larger population.
Types of descriptive statistics, frequency distribution, measures of central tendency, measures of variability, univariate descriptive statistics, bivariate descriptive statistics, other interesting articles, frequently asked questions about descriptive statistics.
There are 3 main types of descriptive statistics:
You can apply these to assess only one variable at a time, in univariate analysis, or to compare two or more, in bivariate and multivariate analysis.
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A data set is made up of a distribution of values, or scores. In tables or graphs, you can summarize the frequency of every possible value of a variable in numbers or percentages. This is called a frequency distribution .
Gender | Number |
---|---|
Male | 182 |
Female | 235 |
Other | 27 |
From this table, you can see that more women than men or people with another gender identity took part in the study. In a grouped frequency distribution, you can group numerical response values and add up the number of responses for each group. You can also convert each of these numbers to percentages.
Library visits in the past year | Percent |
---|---|
0–4 | 6% |
5–8 | 20% |
9–12 | 42% |
13–16 | 24% |
17+ | 8% |
Measures of central tendency estimate the center, or average, of a data set. The mean, median and mode are 3 ways of finding the average.
Here we will demonstrate how to calculate the mean, median, and mode using the first 6 responses of our survey.
The mean , or M , is the most commonly used method for finding the average.
To find the mean, simply add up all response values and divide the sum by the total number of responses. The total number of responses or observations is called N .
Data set | 15, 3, 12, 0, 24, 3 |
---|---|
Sum of all values | 15 + 3 + 12 + 0 + 24 + 3 = 57 |
Total number of responses | = 6 |
Mean | Divide the sum of values by to find : 57/6 = |
The median is the value that’s exactly in the middle of a data set.
To find the median, order each response value from the smallest to the biggest. Then , the median is the number in the middle. If there are two numbers in the middle, find their mean.
Ordered data set | 0, 3, 3, 12, 15, 24 |
---|---|
Middle numbers | 3, 12 |
Median | Find the mean of the two middle numbers: (3 + 12)/2 = |
The mode is the simply the most popular or most frequent response value. A data set can have no mode, one mode, or more than one mode.
To find the mode, order your data set from lowest to highest and find the response that occurs most frequently.
Ordered data set | 0, 3, 3, 12, 15, 24 |
---|---|
Mode | Find the most frequently occurring response: |
Measures of variability give you a sense of how spread out the response values are. The range, standard deviation and variance each reflect different aspects of spread.
The range gives you an idea of how far apart the most extreme response scores are. To find the range , simply subtract the lowest value from the highest value.
The standard deviation ( s or SD ) is the average amount of variability in your dataset. It tells you, on average, how far each score lies from the mean. The larger the standard deviation, the more variable the data set is.
There are six steps for finding the standard deviation:
Raw data | Deviation from mean | Squared deviation |
---|---|---|
15 | 15 – 9.5 = 5.5 | 30.25 |
3 | 3 – 9.5 = -6.5 | 42.25 |
12 | 12 – 9.5 = 2.5 | 6.25 |
0 | 0 – 9.5 = -9.5 | 90.25 |
24 | 24 – 9.5 = 14.5 | 210.25 |
3 | 3 – 9.5 = -6.5 | 42.25 |
= 9.5 | Sum = 0 | Sum of squares = 421.5 |
Step 5: 421.5/5 = 84.3
Step 6: √84.3 = 9.18
The variance is the average of squared deviations from the mean. Variance reflects the degree of spread in the data set. The more spread the data, the larger the variance is in relation to the mean.
To find the variance, simply square the standard deviation. The symbol for variance is s 2 .
Univariate descriptive statistics focus on only one variable at a time. It’s important to examine data from each variable separately using multiple measures of distribution, central tendency and spread. Programs like SPSS and Excel can be used to easily calculate these.
Visits to the library | |
---|---|
6 | |
Mean | 9.5 |
Median | 7.5 |
Mode | 3 |
Standard deviation | 9.18 |
Variance | 84.3 |
Range | 24 |
If you were to only consider the mean as a measure of central tendency, your impression of the “middle” of the data set can be skewed by outliers, unlike the median or mode.
Likewise, while the range is sensitive to outliers , you should also consider the standard deviation and variance to get easily comparable measures of spread.
If you’ve collected data on more than one variable, you can use bivariate or multivariate descriptive statistics to explore whether there are relationships between them.
In bivariate analysis, you simultaneously study the frequency and variability of two variables to see if they vary together. You can also compare the central tendency of the two variables before performing further statistical tests .
Multivariate analysis is the same as bivariate analysis but with more than two variables.
In a contingency table, each cell represents the intersection of two variables. Usually, an independent variable (e.g., gender) appears along the vertical axis and a dependent one appears along the horizontal axis (e.g., activities). You read “across” the table to see how the independent and dependent variables relate to each other.
Number of visits to the library in the past year | |||||
---|---|---|---|---|---|
Group | 0–4 | 5–8 | 9–12 | 13–16 | 17+ |
Children | 32 | 68 | 37 | 23 | 22 |
Adults | 36 | 48 | 43 | 83 | 25 |
Interpreting a contingency table is easier when the raw data is converted to percentages. Percentages make each row comparable to the other by making it seem as if each group had only 100 observations or participants. When creating a percentage-based contingency table, you add the N for each independent variable on the end.
Visits to the library in the past year (Percentages) | ||||||
---|---|---|---|---|---|---|
Group | 0–4 | 5–8 | 9–12 | 13–16 | 17+ | |
Children | 18% | 37% | 20% | 13% | 12% | 182 |
Adults | 15% | 20% | 18% | 35% | 11% | 235 |
From this table, it is more clear that similar proportions of children and adults go to the library over 17 times a year. Additionally, children most commonly went to the library between 5 and 8 times, while for adults, this number was between 13 and 16.
A scatter plot is a chart that shows you the relationship between two or three variables . It’s a visual representation of the strength of a relationship.
In a scatter plot, you plot one variable along the x-axis and another one along the y-axis. Each data point is represented by a point in the chart.
From your scatter plot, you see that as the number of movies seen at movie theaters increases, the number of visits to the library decreases. Based on your visual assessment of a possible linear relationship, you perform further tests of correlation and regression.
If you want to know more about statistics , methodology , or research bias , make sure to check out some of our other articles with explanations and examples.
Methodology
Research bias
Descriptive statistics summarize the characteristics of a data set. Inferential statistics allow you to test a hypothesis or assess whether your data is generalizable to the broader population.
The 3 main types of descriptive statistics concern the frequency distribution, central tendency, and variability of a dataset.
If you want to cite this source, you can copy and paste the citation or click the “Cite this Scribbr article” button to automatically add the citation to our free Citation Generator.
Bhandari, P. (2023, June 21). Descriptive Statistics | Definitions, Types, Examples. Scribbr. Retrieved July 8, 2024, from https://www.scribbr.com/statistics/descriptive-statistics/
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Karen Ayres | Measuring genetic correlations within and between loci, with implications for disequilibrium mapping and forensic identification |
Andrew Morris | Transmission tests of linkage and association using samples of nuclear families with at least one affected child |
Julian Higgins | Exploiting information in random effects meta-analysis |
Mohammed Inayat Khan | Improving precision of agricultural field experiments in Pakistan |
Luzia Trinca | Blocking response surface designs |
Phil Bowtell | Non-linear functional relationships |
Louise Burt | Statistical modelling of volcanic hazards |
Helen Millns | The application of statistical methods to the analysis of diet and coronary heart disease in Scotland |
Dominic Neary | Methods of analysis for ordinal repeated measures data |
Graham Pursey | Shape location and classification with reference to fungal spores |
Nigel Stallard | Increasing efficiency in the design and analysis of animal toxicology studies |
Katarzyna Stepniewska | Some variable selection problems in medical research |
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The methodology , methods, and results sections of a thesis are crucial for showcasing the statistical underpinnings of the research. The methodology outlines the overarching approach, detailing how the research was conducted and why certain statistical methods were chosen. This section sets the stage, explaining the framework within which the data was analyzed and interpreted. It’s here that the researcher justifies their methodological choices, highlighting the rigor and reliability of their approach.
Following the methodology, the methods section dives deeper into the specifics of data collection and analysis. It describes the statistical tests used, the rationale behind their selection, and how they were applied to the research data. This section is key for demonstrating the technical competence of the researcher and the validity of the research design. Finally, the results section presents the findings in a clear, logical manner, supported by statistical evidence. This triad of sections forms the backbone of the thesis, underpinning the research with solid statistical foundations.
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The range of statistical analyses employed in theses is vast and varied, tailored to suit the specific demands of each research question. From basic descriptive statistics that summarize data to complex inferential tests that explore relationships and causality, the choice of analysis is critical. This decision should be informed by the research design, the nature of the data, and the hypotheses under investigation. Each statistical method offers unique insights, and selecting the most appropriate one is key to unlocking the full potential of your data.
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Choosing the right statistical tests is pivotal for analyzing dissertation data effectively. The main tests include:
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Statistical software plays a pivotal role in theses, offering the tools needed to conduct sophisticated analyses with efficiency and accuracy. The choice of software often depends on the specific needs of the research, including the complexity of the data and the preferred statistical methods. Commonly used software includes:
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Graduate theses.
Below is a list of the theses produced by graduate students in the Department of Statistics and Actuarial Science.
2023-3 | Payman Nickchi | Ph.D | Linkage fine-mapping on sequences from case-control studies and Goodness-of-fit tests based on empirical distribution function for general likelihood model | R. Lockhart & J. Graham | |
2023-3 | Gurashish Bagga | MSc | Offensive and defensive penalties on score differentials and drive outcomes in the NFL | J. Hu | |
2023-3 | Rina Wang | MSc | The Application of Categorical Embedding and Spatial-Constraint Clustering Methods in Nested GLM Model | J. Cao | |
2023-3 | David (Liwei) Lai | MSc | An Exploration of a Testing Procedure for the Aviation Industry | T. Swartz & G. Parker | |
2023-3 | Teng-Wei Lin | MSc | Forecasting the trajectories of Southern Resident Killer Whales with stochastic continuous-time movement models | R. Joy & R. Routledge | |
2023-3 | Nirodha Epasinghege Dona | PhD | Big Data Applications in Genetics and Sports | J. Graham & T. Swartz | |
2023-3 | Kim Kroetch | MSc | D. Estep | ||
2023-3 | Summer Shan | MSc | C. Tsai | ||
2023-3 | William Ruth | PhD | R. Lockhart | ||
2023-2 | Boyi Hu | PhD | J. Cao | ||
2023-2 | Trevor Thomson | PhD | J. Hu | ||
2023-2 | Daisy (Ying) Yu | PhD | B. McNeney | ||
2023-2 | Pulindu Ratnasekera | PhD | B. McNeney | ||
2023-2 | Yuqi Meng | MSc | T. Loughin | ||
2023-2 | Linwan Xu | MSc | J. Hu | ||
2023-2 | Manpreet Kaur | MSc | B. Tang | ||
2023-2 | Guanzhou Chen | PhD | B. Tang | ||
2023-2 | Kalpani Darsha Perera | MSc | B. Tang | ||
2023-2 | Junpu Xie | MSc | D. Estep | ||
2023-2 | Haixu Wang | PhD | J. Cao | ||
2023-2 | Jesse Schneider | MSc | D. Stenning | ||
2023-1 | Tianyu Yang | MSc | J. Graham | ||
2023-1 | Hashan Peiris | MSc | H. Jeong | ||
2023-1 | Yaning Zhang | MSc | Y. Lu | ||
2022-3 | Elijah Cavan | MSc | T. Swartz & J. Cao | ||
2022-3 | Carla Louw | MSc | R. Lockhart | ||
2022-3 | Wenyuan Zhou | MSc | J. Bégin & B. Sanders | ||
2022-3 | Ryker Moreau | MSc | H. Perera & T. Swartz | ||
2022-3 | Lucas (Yifan) Wu | PhD | T. Swartz | ||
2022-3 | Shaun McDonald | PhD | D. Campbell | ||
2022-2 | Luyao Lin | PhD | D. Bingham | ||
2022-2 | Youwei Yan | MSc | D. Stenning | ||
2022-2 | Lei Chen | MSc | Y. Lu | ||
2022-2 | Jacob (Xuankang) Zhu | MSc | D. Estep | ||
2022-2 | Hasan Nathani | MSc | C. Tsai | ||
2022-2 | Mandy Yao | MSc | D. Estep | ||
2022-1 | Zayed Shahjahan | MSc | J. Graham | ||
2022-1 | Menqi (Molly) Cen | MSc | J. Hu | ||
2022-1 | Wen Tian (Wendy) Wang | MSc | B. Tang | ||
2022-1 | Yazdi Faezeh | PhD | D. Bingham | ||
2022-1 | Winfield Chen | MSc | L. Elliott | ||
2021-3 | Kangyi (Ken) Peng | MSc | T. Swartz & G. Parker | ||
2021-3 | Xueyi (Wendy) Xu | MSc | B. Sanders | ||
2021-3 | Christina Nieuwoudt | PhD | J. Graham | ||
2021-2 | Yige (Vivian) Jin | MSc | J.F. Bégin | ||
2021-2 | Peter Tea | MSc | T. Swartz | ||
2021-2 | Louis Arsenault-Mahjoubi | MSc | J.F. Bégin | ||
2021-2 | Cheng-Yu Sun | PhD | B. Tang | ||
2021-2 | Xuefei (Gloria) Yang | MSc | B. McNeney | ||
2021-2 | Charith Karunarathna | PhD | J. Graham | ||
2021-1 | Lisa McQuarrie | MSc | R.Altman | ||
2021-1 | Yunwei Tu | MSc | R.Lockhart | ||
2021-1 | Nikola Surjanovic | MSc | T. Loughin | ||
2020-3 | Renny Doig | MSc | L.Wang | ||
2020-3 | Dylan Maciel | MSc | D.Bingham | ||
2020-3 | Cherie Ng | MSc | J.F. Bégin | ||
2020-3 | James Thomson | MSc | G.Perera | ||
2020-2 | Gabriel Phelan | MSc | | D. Campbell | |
2020-2 | Jacob Mortensen | PhD | L. Bornn | ||
2020-2 | Yi Xiong | PhD | J. Hu | ||
2020-2 | Shufei Ge | PhD | L. Wang | ||
2020-2 | Fei Mo | MSc | J.F. Bégin | ||
2020-2 | Tainyu Guan | PhD | J. Cao | ||
2020-2 | Haiyang (Jason) Jiang | MSc | T. Loughin | ||
2020-2 | Nathan Sandholtz | PhD | L. Bornn | ||
2020-2 | Zhiyang (Gee) Zhou | PhD | R. Lockhart | ||
2020-2 | Matthew Reyers | MSc | T. Swartz | ||
2020-2 | Jie (John) Wang | MSc | L. Wang | ||
2020-1 | Matt Berkowitz | MSc | R. Altman | ||
2020-1 | Megan Kurz | MSc | J. Hu | ||
2020-1 | Siyuan Chen | MSc | B. McNeney | ||
2020-1 | Sihan (Echo) Cheng | MSc | C. Tsai | ||
2020-1 | Barinder Thind | MSc | J. Cao | ||
2020-1 | Neil Faught | MSc | S. Thompson | ||
2020-1 | Kanav Gupta | MSc | J.F. Bégin | ||
2020-1 | Dani Chu | MSc | T. Swartz |
2015 - 2019 2010 - 2014 2005 - 2009 2000 - 2004 1990's 1980's and prior
Statistics major, program requirements.
Code | Title | Units |
---|---|---|
Introduction to Computer Science | 3 | |
Calculus I | 3 | |
Calculus II | 3 | |
Calculus III | 3 | |
Matrix Algebra | 3 | |
Elementary to Intermediate Statistics and Data Analysis | 3 | |
Linear Statistical Models | 3 | |
Bayesian Statistics | 3 | |
or | Statistical Computation | |
Probability | 3 | |
Mathematical Statistics | 3 | |
Total Units | 30 |
Each of these core courses must be passed with a grade of C- or better.
AP credit can be applied for Math 131 Calculus I , Math 132 Calculus II , and Math 233 Calculus III . Students who have completed Math 203 Honors Mathematics I and Math 204 Honors Mathematics II will have this requirement waived.
CSE 131 Introduction to Computer Science may be waived after consultation with the director of undergraduate studies of the Department of Computer Science and Engineering.
Students complete four additional elective courses (12 units). At least two probability or statistics courses must be taken at the 400 level or above; the other courses may be chosen from an approved list of electives. For more information, visit the Department of Statistics and Data Science website .
The major and minor in statistics require electives in probability and statistics. Below is the list of these allowed courses:
Code | Title | Units |
---|---|---|
Elementary to Intermediate Statistics and Data Analysis | 3 | |
Statistics for Data Science I | 3 | |
Biostatistics | 3 | |
Experimental Design | 3 | |
Survival Analysis | 3 | |
Linear Statistical Models | 3 | |
Advanced Linear Statistical Models | 3 | |
Bayesian Statistics | 3 | |
Multivariate Statistical Analysis | 3 | |
Time Series Analysis | 3 | |
Mathematical Foundations of Big Data | 3 | |
Statistical Computation | 3 | |
Probability | 3 | |
Mathematical Statistics | 3 | |
Stochastic Processes | 3 | |
Topics in Statistics | 3 | |
Theory of Statistics I | 3 | |
Theory of Statistics II | 3 | |
Advanced Linear Models I | 3 | |
Advanced Linear Models II | 3 | |
Advanced Statistical Computing I | 3 | |
Advanced Statistical Computing II | 3 | |
Topics in Statistics: Spatial Statistics | 3 | |
Topics in Statistics | 3 | |
Topics in Statistics | 3 |
SDS 3200 and SDS 3211 cannot both be counted toward a major or minor.
At most, one approved substitution can be made using a course not based in the major's home departments. Please note the policy that, at most, one course from a different department at Washington University can count toward a major or minor.
Distinction.
These qualifier courses can count toward the additional course requirements for Distinction.
Additional requirements.
At the time of graduation, the Department of Statistics and Data Science will recommend that a candidate receive Latin Honors (cum laude, magna cum laude, or summa cum laude) if that student has completed the department's requirements for High Distinction or Highest Distinction in Mathematics, including an Honors Thesis. The actual award of Latin Honors is managed by the College of Arts & Sciences.
Arts & Sciences majors who want to be candidates for Latin Honors, High Distinction, or Highest Distinction must complete an honors thesis. Writing an honors thesis involves a considerable amount of independent work, reading, creating mathematics, writing a paper that meets acceptable professional standards, and making an oral presentation of the results.
An honors thesis can take three forms:
Junior Year, Spring Semester:
Senior Year:
Each year, the department considers graduating majors for several departmental prizes and also awards a prize to a junior. Recipients are recognized at an annual awards ceremony in April where graduating majors each receive a certificate and a set of honors cords to be worn as part of the academic dress at Commencement. Awards are noted on the student's permanent university record.
Visit the Statistics and Data Science page for additional information about this program.
Contact: | José E. Figueroa-López |
Email: | |
Website: |
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Theses/Dissertations from 2016 PDF. A Statistical Analysis of Hurricanes in the Atlantic Basin and Sinkholes in Florida, Joy Marie D'andrea. PDF. Statistical Analysis of a Risk Factor in Finance and Environmental Models for Belize, Sherlene Enriquez-Savery. PDF
Table of contents. Step 1: Write your hypotheses and plan your research design. Step 2: Collect data from a sample. Step 3: Summarize your data with descriptive statistics. Step 4: Test hypotheses or make estimates with inferential statistics.
The results chapter (also referred to as the findings or analysis chapter) is one of the most important chapters of your dissertation or thesis because it shows the reader what you've found in terms of the quantitative data you've collected. It presents the data using a clear text narrative, supported by tables, graphs and charts.
Usually there is no good way to write a statistic. It rarely sounds good, and often interrupts the structure or flow of your writing. Oftentimes the best way to write descriptive statistics is to be direct. If you are citing several statistics about the same topic, it may be best to include them all in the same paragraph or section.
A master's thesis is an independent scientific work and is meant to prepare students for future professional or academic work. Largely, the thesis is expected to be similar to papers published in statistical journals. It is not set in stone exactly how the thesis should be organized. The following outline should however be followed. Title Page
Guidelines and Explanations. In light of the changes in psychology, faculty members who teach statistics/methods have reviewed the literature and generated this guide for graduate students. The guide is intended to enhance the quality of student theses by facilitating their engagement in open and transparent research practices and by helping ...
Senior theses in Statistics cover a wide range of topics, across the spectrum from applied to theoretical. Typically, senior theses are expected to have one of the following three flavors: 1. Novel statistical theory or methodology, supported by extensive mathematical and/or simulation results, along with a clear account of how the research ...
Master's Thesis. As an integral component of the Master of Science in Statistical Science program, you can submit and defend a Master's Thesis. Your Master's Committee administers this oral examination. If you choose to defend a thesis, it is advisable to commence your research early, ideally during your second semester or the summer following ...
Thesis Life: 7 ways to tackle statistics in your thesis. Thesis is an integral part of your Masters' study in Wageningen University and Research. It is the most exciting, independent and technical part of the study. More often than not, most departments in WU expect students to complete a short term independent project or a part of big on ...
Mathematics & Statistics Theses & Dissertations. Theses and dissertations published by graduate students in the Department of Mathematics and Statistics, College of Sciences, Old Dominion University, since Fall 2016 are available in this collection. Backfiles of all dissertations (and some theses) have also been added.
Department of Statistics - Academic Commons Link to Recent Ph.D. Dissertations (2011 - present) 2022 Ph.D. Dissertations. Andrew Davison. Statistical Perspectives on Modern Network Embedding Methods. Sponsor: Tian Zheng. Nabarun Deb. Blessing of Dependence and Distribution-Freeness in Statistical Hypothesis Testing.
PhD Theses. 2023. Title. Author. Supervisor. Statistical Methods for the Analysis and Prediction of Hierarchical Time Series Data with Applications to Demography. Daphne Liu. Adrian E Raftery. Exponential Family Models for Rich Preference Ranking Data.
Guide to library resources in statistics and probability theory.
There are all kinds of statistics you could use for your Master's thesis, Master's dissertation, Ph.D. thesis, and Ph.D. dissertation. These days, it is assumed and maybe required that you use multivariate statistics of some kind. The days of simple bivariate correlations and t-tests seem to be gone forever - depending on the area of ...
Measures of Central Tendency and Other Commonly Used Descriptive Statistics. The mean, median, and the mode are all measures of central tendency. They attempt to describe what the typical data point might look like. In essence, they are all different forms of 'the average.'. When writing statistics, you never want to say 'average' because it is ...
Statistics is the art of communicating with the silent truth-teller: data. More legitimate, accurate and powerful inference from data is the endless pursuit of all statisticians. ... This thesis is divided into two self-contained parts. The first part focuses on diagnostic tools for missing data. Models for analyzing multivariate data sets with ...
Affordable Statistics Consulting Service Statistics consulting, data analysis, and results help at affordable prices. Professional, client-oriented, and prompt statistics consulting service for doctoral candidates with dissertations, master and undergraduate students with a thesis or a final project, postdoctoral, researchers requiring help with manuscripts or articles, private businesses ...
Types of descriptive statistics. There are 3 main types of descriptive statistics: The distribution concerns the frequency of each value. The central tendency concerns the averages of the values. The variability or dispersion concerns how spread out the values are. You can apply these to assess only one variable at a time, in univariate ...
UT Dallas > Mathematical Sciences > Graduate Programs > PhD Dissertations in Statistics. Year of Graduation. Student. Supervising Professor. Dissertation Title. 2023. Tejasv Bedi. Qiwei Li. BAYESIAN MODEL BASED CLUSTER ANALYSIS AND ITS APPLICATIONS IN EPIDEMIOLOGY & MICROBIOLOGY.
It usually starts with something like "A THESIS Presented to the Faculty …" and ends with "Lincoln, Nebraska [month] [year]." ABSTRACT: Just include the body of the abstract, not the title or your name, but DO add your advisor's name at the end of the abstract after the word Advisor and a colon, like this: Advisor: ….
DStat thesis: Challenges in modelling pharmacogenetic data: Investigating biomarker and clinical response simultaneously for optimal dose prediction. Rungruttikarn Moungmai. Family-based genetic association studies in a likelihood framework. Michael Dunbar. Multiple hydro-ecological stressor interactions assessed using statistical models.
Thesis Statistics Help for Get a Free Quote Now! 3. PhD Data Analysis Help: For Master's and PhD Candidates. PhD Thesis Statistics Help is an essential service tailored specifically for Master's and PhD candidates who are embarking on the rigorous journey of thesis writing. This specialized support goes beyond basic statistical analysis ...
Below is a list of the theses produced by graduate students in the Department of Statistics and Actuarial Science. 2023-3 Payman Nickchi Ph.D Linkage fine-mapping on sequences from case-control studies and Goodness-of-fit tests based on empirical distribution function for general likelihood model R ...
To do an honors thesis involving data analysis, it is usually necessary to have completed SDS 3200, SDS 493, and SDS 494 (or SDS 3211 Statistics for Data Science I and SDS 4211 Statistics for Data Science II) by the end of the junior year and to have the ability to work with statistical software such as SAS, R, or Python.