Here you will find a list of FAQs (general, and specific to mathematics and statistics software) compiled by SDS consultants as well as a list of helpful outside resources.
Choose "general" or a specific software package from the list below to be taken to the relevant FAQs.
These questions are frequently asked by our clients. Browse the category lists below periodically to check for new FAQs that may help answer your question. New questions and answers will be added to the bottom of each category list.
If you are a UT-affiliate (faculty, staff, or student of the UT system) and do not find the answer to your question here, please send us an email. We will do our best to answer your question. If you are not a UT-affiliate, we regret that we cannot answer your question.
Links to Outside Resources
SDS Statistical FAQs (this webpage).
A searchable index of questions frequently asked by our clients. Includes general statistical topics, as well as software-specific questions for AMOS, HLM, Lisrel, Minitab, Mplus, SAS, & SPSS.
A great resource for the majority of statistical tests and procedures. Includes a detailed write-up of each test and in most cases includes annotated SPSS output.
From Will G. Hopkins preface page: "I have written these pages for researchers and students in the sport and exercise sciences. I also hope to get hits from students and researchers struggling to understand stats in other disciplines." A great general introduction to basic statistical methods.
Another good resource for explanations of several statistical tests and several statistical packages including HLM, Mplus, SPSS, Stata, R and SAS. This page also has chapter datasets from a few popular statistical texts.
Data Management at UT A site from the UT Libraries, covering the benefits (and requirements) of good data management. Links and information on Data Managment Plans, Data Repositories, and best practices.
Sponsored by the University of Michigan, the Inter-University Consortium for Political and Social Research is a great place to look for primary source datasets.
David Kenny has a great website that does a good job at explaining the general concepts and rationale of standard mediation accomplished through regression techniques. Also see the Moderation and Mediation Help Center for an easy mediation calculator for three variables.
This site uses the techniques outlined in Aiken & West (1991) to graph regression interactions for OLS, HLM, and Latent Curve models.
A bibliographic database of applied and theoretical statistical literature from the University of Wisconsin at Madison.