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...

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...

Created by Illuminations: Resources for Teaching Mathematics, students model linear data in a variety of settings that range from car repair costs to sports to medicine. Students will construct scatterplots of...