The dataset presented in this article, created by Singfat Chu of the National University of Singapore, contains information on the prices and weights of diamond stones; it can be used to illustrate simple linear...

This article, created by Bruce J. McLaren and Constance H. McLaren from Indiana State University, describes a dataset containing monthly household electric billing charges for ten years. The data can be used to...

This page will perform the procedure for up to k=12 sample values of r, with a minimum of k=2. It will also perform a chi-square test for the homogeneity of the k values of r, with df=k-1. The several values of r can be...

The site, created by Dr. Hossein Arsham of the University of Baltimore, provides an introduction to understand the basics of and working with Excel. Redoing the illustrated numerical examples in this site will help in...

This online, interactive lesson on expected value provides examples, exercises, and applets in which students will explore relationships between the expected value of real-valued random variables and the center of the...