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...

This lesson, created by Amar Patel of the University of Illinois - Urbana-Champaign, introduces simple linear regression with several Excel spreadsheet examples such as temperature versus cricket chirps, height versus...

In the first simulation, random samples of size n are drawn from the population one sample at a time. With df=3, the critical value of chi-square for significance at or beyond the 0.05 level is 7.815; hence, any...