While R might not look like much at first glance, data analysts all over the world use the free, open-source data analysis software to run statistics on everything from psychology research to the stock market. Created in 1996 by two statistics professors in New Zealand, the programming language is comparatively user-friendly especially when paired with R Studio (https://www.rstudio.com/), a free...

Simple Interactive Statistical Analysis (SISA), designed by a research consultant in the Netherlands, "allows you to do statistical analysis directly on the Internet." The program will calculate a variety of statistical procedures, including T-Tests, Poisson Distributions, and other calculations. The ability to perform analysis online provides users an opportunity to assess the software, which is...

This site, overseen by the School of Statistics at the University of Minnesota (Twin Cities Campus), features a variety of links to free statistical software pages. Brief descriptions of the software capabilities and download information are given. MacANOVA, a statistical analysis and matrix algebra tool is just one of the four software links provided.

Created by Richard Lowry, Department of Psychology, Vassar College, the VassarStats Statistical Computation Website is a large collection of statistical calculators for categorical frequency data, proportions, ordinal data, and correlation and regression, among other procedures. The site includes a helpful table on the platforms and browsers needed to run particular simulations, and each page...

Anyone without access to a statistical software package may find this Web site to be a valuable tool. A wide variety of free online utilities are offered, including data and equation plotting, regression analysis, and scientific forecasting. The applications' interfaces are very straightforward, and many options are available for users to input their data and customize the desired output. No...