Click on the following links. Please note these will open in a new window.

This website helps determine the difference between random samples and randomization.

This website is a simple explanation of the concept of exchangeability.

This presentation gives examples of an exact randomization test.

This presentation provides the advantages of randomization and comparison between randomization and bootstrapping.

This website has an example of a randomization test that includes a side-by-side box and whisker plot.