Statistics Outreach Center: Misc
Missing Data
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Modern methods for missing dataPresentation that describes how to do use maximum likelihood methods for dealing with missing data in SAS and Stata.
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An overview of missing dataPresentation describing ways to evaluate and understand missing data, methods for handling missing data and their advantages and disadvantages, and useful Stata commands.
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Missing data conceptsConceptual discussion of missing data and implications for handling it.
Missing data treatment in SPSS and SAS
- Entering missing values with SPSS syntax
- Imputation methods (Multiple Imputation and Multiple Regression with SAS and SPSS)
Missing data treatment Using R
Sample Size and Power Analysis
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G*PowerG*Power covers many different statistical tests of the F, t, chi-square, and z test families as well as some exact tests. Effect size calculators and graphics options are available. Offers five different types of power analyses.
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Power AnalysisThe link provides Power and Precision manuals for calculating power and sample sizes from t-tests and ANOVAs to Logistic Regressions and survival analyses.
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Pass - NCSSProgram for power analysis and sample size calculation. Manual and demonstration video available.
Frequently Used Resources
UCLA
UCLA idre (Institute for Digital Research and Education Center) provide resources for R, SAS, SPSS, and STATA: how to start, data analysis procedure and examples by various topic such as data management, graphics, ANOVA, Regression, Multilevel Modeling, etc.
Princeton University
The Data and Statistical Service of Princeton University provides useful materials of Getting Started in Data Analysis series using Stata, R, and Excel.
Sites with Useful Links
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List of useful linksThis site has links to lots of useful psychometric information on the web.
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Free Statistical SoftwareA list of free statistical software organized by statistical method with descriptions of features.
Online Lectures
Coursera offers free short lecture courses from universities, including statistical and programming courses. They are time limited. Create an account to access the available courses.
Playlists of Statistics I & II courses from the University of California Berkley.
Online Textbooks
Free Statistics Textbooks
- StatSoft E-Statistics Textbook: Dell Software Company provides free online statistics textbooks organized topic.
- SOCR Books: Statistics Ebook available online.
Statistics Advice
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The Analysis FactorEasy to understand blog postings on a variety of topics, mostly free with some paid content - training webinars etc.