This site gives an explanation, a definition of, and an example using comparison of two means. Topics include confidence intervals and significance tests, z and t statistics, and pooled t procedures. Overall, this is a...

Part of MIT\'s innovative OpenCourseWare Project, that provides materials from MIT classes to the public on the web, the site provides materials from a course on interpreting environmental data to derive meaningful...

A professor of psychology at Vassar College is the author of this impressive online statistics textbook. Seventeen chapters and numerous appendixes range in topic from beginning concepts to what would likely be covered...

This site, created by the Department of Statistics at Yale University gives an explanation, a definition and an example of conditional probability. Topics include the probabilities of intersections of events and Bayes'...

This lesson is based on several interesting problems. Each problem has a somewhat unexpected answer; in fact, many people have a hard time accepting experimental results for these problems, as the results may seem...