Created by Harvey Motulsky for GraphPad Software, this page provides a table for selecting an appropriate statistical method based on type of data and what information is desired from the data. It also compares...

This module, created by Kathy Rowell of Sinclair Community College, provides an activity were students will attempt to explain how each of the following variables is related to child poverty within the United States:...

This collection of free, interactive Java applets provides a graphical interface for studying the power of the most commonly encountered experimental designs. Intended to be useful in planning statistical studies, these...

This page, created by Richard Lowry of Vassar College, performs a "Kolmogorov-Smirnov goodness of fit test" for categorical data. Users enter observed frequencies and expected frequencies for up to eight mutually...

As the page opens, you will be prompted to enter the sizes of your several samples. If you are starting out with raw (unranked) data, the necessary rank- ordering will be performed automatically. Then the Java program...