This site, created by Michelle Lacey of Yale University, gives a definition and an example of numerical summaries. Topics include: mean, median, quantiles, variance, and standard deviation. While brief, the site is...

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...

This applet simulates sampling from a population with a mean of 50 and a standard deviation of 10. For each sample, the 95% and 99% confidence intervals on the mean are computed based on the sample mean and sample...

This article, created by G.V. Barr, proposes to make a "tentative contribution to the knowledge of students' understanding of the statistical concepts; median and mode." It relates to a pilot study and tries to answer...