This site contains materials for a college level undergraduate statistics course. The approach places emphasis on practical application. Examples are shown with hand computations and with the Minitab statistical program...

This activity explains the important features of a distribution: shape, center, spread, and unusual features. It also covers how to determine the difference between mean and median, and their respective measures of...

Created by Kyle Siegrist of the University of Alabama-Huntsville, this is an online, interactive lesson on random samples. The author provides examples, exercises, and applets concerning many different topics. Some of...

This article, jointly created by authors Mary E. Cooley, Helene Moriarty and Thomas H. Short, describes a dataset on the readability of American Cancer Society and National Cancer Institute pamphlets about cancer. This...

Averages are meant to convey the essential features of a set of data, or a random variable, in a simple and a concise way. Like any other summary, an average can be misleading, misused and abused; there is a fair amount...