This site, authored by David M. Lane of HyperStat Online, explains the relationship between hypothesis testing and confidence intervals. Because of the immense similarities between the two procedures many find them to be...

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 resource contains a broad range of information concerning statistics. It is divided up into eighteen chapters and also includes links to other resources pertaining to statistics. Some of these chapters include:...

This resource gives a thorough definition of confidence intervals. It shows the user how to compute a confidence interval and how to interpret them. It goes into detail on how to construct a confidence interval for the...

This site, created by author David M. Lane of HyperStat Online, defines power and explains what factors may affect it, such as significance level, sample size and variance. In addition, their is an activity allowing...