Free Statistical Analysis Software


All software listed here is free and run under Macintosh, Windows, and Unix operating systems.

General Analysis Programs | Power | Tables | Univariate Descriptive | Regression and Correlation | Curve Fitting | Distribution Free Tests

General Statistical Analysis Programs

The R Project for Statistical Computing full featured, very powerful

Analysis Lab Basic analyses, good for teaching.

A nice collection of small programs for specific types of analyses.)

DataPlot Includes scientific visualization, statistical analysis, and non-linear modeling.

MacAnova Not just for Macs, and not just ANOVA

BrightStat Basic analyses including many non-parametric tests.

Statistics101 Resampling

Tetrad Causal Modeling

Simple Interactive Statistical Analysis Many basic statistical tests.

Statistician Lite Many statistical tests using Excel.

Power Analysis
Power analysis for numerous designs and statistics
John Pezzullo

Power analysis for ANOVA designs
by Michael Friendly

Statistical considerations for clinical trials and scientific experiments
by David Schoenfeld

Power and sample size page
by Russ Lenth

Statistical Tables
Binomial Distribution
Normal Distribution
t Distribution
Chi Square Distribution
F Distribution
Online Statistics by David Lane and Joan Lu. JavaScript program by John Pezzullo JavaScript program by John Pezzullo CGI program by Jan de Leeuw JavaScript program by David Lane
Java program by B. Narasimhan Java program by David Lane Java program by B. Narasimhan Java program by B. Narasimhan JavaScript program by John Pezzullo
  Java program by B. Narasimhan Online Statistics by David Lane and others at Rice U. JavaScript program by John Pezzullo Java program by B. Narasimhan
JavaScript Program
by David Lane
  Online Statistics by David Lane and others at Rice U.  



Describing Univariate Data
Many descriptive statistics and stem and leaf displays
by David Lane

Interactive histogram
by Webster West

Statiscope
by Mikael Bonnier
 
Correlation and Regression

Ordinary least squares
by T. Kirkman

RegressIt Excel add-in
by Bob Nau


Curve Fitting
Interactive 2-Dimensional and 3-Dimensional Data Modeling
by James Phillips

Distribution-Free Tests
Mann-Whitney U/Wilcoxon Rank Sum
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