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STATISTICS RESOURCES

• Notes, online textbooks, articles and glossaries
• Practice problems & tutorials on the web
• Sample questions (with answers) suitable for an intoductory statistics class. Site maintained by Carl Schwarz, Department of Statistics & Actuarial Sciences, Simon Fraser University.
• DASL: The Data and Story Library. DASL (pronounced "dazzle") is an online library of datafiles and stories that illustrate the use of basic statistics methods. We hope to provide data from a wide variety of topics so that statistics teachers can find real-world examples that will be interesting to their students. Use DASL's powerful search engine to locate the story or datafile of interest.
• The Claremont Colleges' Web Interface for Statistics Education: Has links to tutorials, glossaries, on-line journals, statistics applets, discussion groups, etc.
• David Lane's practice problems. No answers provided for this set.
• Addison Wesley Longman's Internet Projects for Introductory Statistics
• John Pezzulo's links to interactive demonstrations & tutorials
• Rice Virtual Lab in Statistics. Includes an online stats book, simulations & demonstrations, case studies, and analysis tools. Thanks to David Lane for letting me know about this site.
• SAS tutorial
• Data archives
• Useful sites for SPSS users
• Other useful websites about statistics
• Online calculators & free programs
• Online stats calculators, and links to some online textbooks. This is a very comprehensive list.
• GraphPad QuickCalcs: Free online calculators for scientists.
• Stat Trek. Take the drudgery out of statistical computations. Computing probabilities, combinations, permutations, and factorials has never been easier. Simply click on the item that you want to use. Each online tool features clear instructions and examples; so you won't lose time getting up to speed.
• EpiData: A free database programme (small in size 1.2Mb) for simple or programmed data entry and data documentation. Export of data includes value and variable labels for Stata, SAS or SPSS.
• R at Loyalty Matrix: A site that promotes and supports the use of R, the open source data analysis & graphics software system.
• EasyReg Internaltional: Free Econometrics Software for Easy Regression Analysis, by Herman J. Bierens. Incldes the following:
• single-equation models
• multliple-equation models
• user-defined nonlinear models
• linear, logit, probit, multinomial logit, poisson, binomial logit & probit, negative binomial logit & probit, tobit, time series, and much more.
• WebStat is freely available data analysis software for use over the World Wide Web.
• All the data analysis tools for introductory statistics
• Easy to use, written with the novice in mind
• Step by step guidance through data analysis procedures
• A wide range of methods for importing data, even over the WWW!
• Graphics > pie charts, histograms, boxplots, scatterplots and more
• Numerics > summary statistics, t-tests, regression, ANOVA and more
• Jerry Dallal's statistical software. Includes programs for sample size calculation, and The Statistician's Swiss Army Knife.
• Alan Miller's Fortran Software. Logistic Regression; TOMS algorithms; Special code for F and NAS compilers; Miscellaneous other code; Applied Statistics Algorithms.
• Bill Miller's OpenStat Homepage. Bill Miller is a retired professor of Industrial Technology who found that a lot of students could not afford to purchase a commercial statistics package. He decided producing a free statistics package was a good way to keep myself entertained during his retirement.
• John Crawford's computer program page. This page contains a series of computer programs that implement a variety of psychometric and statistical methods for use by clinical neuropsychologists and clinical psychologists. Includes programs for testing the difference between independent and dependent correlations.
• G.A.S.P. - Globally Accessible Statistical Procedures. Includes data analysis procedures and educational procedures. Nice site.
• Online metric converter.
• PS: An interactive Windows 95/98 program for calculating power and sample size. Written by William D Dupont and Dale Plummer of the Vanderbilt University Medical Center.
• Free software (executable or code) from the M.D. Anderson Cancer Center.
• O-matrix homepage. O-Matrix is a MATLAB-compatible interactive analysis and visualization tool that combines the programming flexibility and performance of a compiled language with the ease of use and functionality of an integrated environment. The light version of O-matrix is quite comprehensive, and completely free. I've found it useful for solving matrix algebra equations.
• John Maindonald's Web Page: Notes and datasets for R and S-Plus.
• ROC analysis programs by Professor Charles Metz, from the University of Chicago Department of Radiology. You may find The magnificent ROC website useful too. It provides a good introduction to the topic, complete with some neat applets. Thanks to Sacha Dubois for alerting me to this site.
• 2x2 tables
• DAG-Stat: Diagnostic & AGreement Statistics. This is a freely available Excel workbook, written by Andrew MacKinnon. It provides a comprehensive range of statistics calculable from 2x2 tables that are useful in evaluating diagnostic tests and interrater agreement.
• Online exact tests for 2x2 contingency tables
• Jim Steiger's homepage, where you can access course materials, download selected publications, and download software created by Dr. Steiger and associates, including the following programs:
• NDC - A Noncentral Distribution Calculator that performs noncentrality interval estimation for the noncentral T, noncentral F, and noncentral Chi-Square distributions. NDC is a stand-alone Windows application.
• MULTICORR: A DOS program for testing pattern hypotheses on correlations. Want to test whether a group of correlations are all zero? Want to compare matrices of correlations over time? Want to test for circumplex structure? Look no further.
• R2: A DOS program for confidence interval estimation, power calculation, and sample size estimation for the squared multiple correlation. You are unlikely to find these capabilities anywhere else.
• Free meta-analysis software...
• My own meta-analysis programs: Three programs that implement the procedures described by Fleiss (1993).
• David B. Wilson's meta-analysis stuff. Includes PowerPoint presentations and macros for SPSS, Stata, and Sas.
• Meta-analysis programs by Ralf Schwarzer:
• the analysis of exact probabilities (p values) as suggested by Rosenthal
• the analysis of effect sizes d, following the methods of either Glass or of Hedges and Olkin
• the analysis of effect sizes r as recommended by Hunter, Schmidt, and Jackson
• EasyMA: Free software for meta-analysis of 2x2 tables, developed in the Department of Clinical Pharmacology of the cardiological hospital in Lyon, France.
• SDCalc_v4.xls: An Excel workbook that computes the SD from either the SE of the mean, or a confidence interval. Thanks to Sacha Dubois for providing this handy little tool.
• Statistical add-ons for Excel. There are some well-documented problems with Excel's statistical functions. Several add-on stats modules are available that circmuvent some of those problems, however. Two of these are listed below.
• Analyse-it. Analyse-it includes 14-parametric & 17-non-parametric statistical functions including multiple linear regression analysis, ANOVA, & chi-square statistics, plus a specialized statistical package for clinical method evaluation & validation. Inexpensive student versions and FREE trial versions are available.
• Rodney Carr's XLStatistics. XLStatistics is a set of Microsoft Excel (ver 5+) workbooks for statistical analysis of data designed to replace and enhance the tools provided with Excel's Data Analysis Toolbox addin. The workbooks are designed to implement a step-by-step guide to the statistical analysis of data (this guide appears commonly as a flow chart in many texts). The set is designed to make data analysis easy. Full version costs \$30 Australian. A FREE version also available.