Richard Lowry of Vassar College has created a log-linear analysis which is a version of chi-square analysis. The relevant values are calculated by way of weighted natural logarithms. This page will calculate several...

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...

In this activity, students learn the true nature of the chi-square and F distributions in lecture notes (PowerPoint file) and an Excel simulation. This leads to a discussion of the properties of the two distributions....

This article, created by Norton Starr of Amherst College, presents a dataset containing the 1970 draft lottery information, which illustrates a nonrandom procedure. Some of the key concepts covered included: Chi-square...

This tool lets you calculate the probability that a random variable X is in a specified range, for a variety of probability distributions for X: the normal distribution, the binomial distribution with parameters n and p,...