This collection of calculators allows users to perform a number of statistical applications. Each provides background on the procedure and an example. Users can compute Descriptive Statistics and...
This page calculates either estimates of sample size or power for interaction tests. The program allows for unequal sample size allocation in the four cells defined by the two treatment groups and...
This page calculates estimates of sample size for a two-stage study, rejection and acceptance points for a two-stage trial, and power. User inputs hypothesized values as well as significance...
The applets in this section allow you to see how the common Xbar control chart is constructed with known variance. The Xbar chart is constructed by collecting a sample of size n at different times t....
The applets in this section allow you to see how different bivariate data look under different correlation structures. The Movie applet either creates data for a particular correlation or animates a...
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