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DASL (pronounced "dazzle") is an online library of datafiles and stories that illustrate the use of basic statistics methods. We hope to provide data from a wide variety of topics so that statistics teachers can find real-world examples that will be interesting to their students. Use DASL's powerful search engine to locate the story or datafile of interest.

This is a good website for stats I think. Although the pupils can often find it tough to even select the right test sometimes. ©2014 GraphPad Software, Inc. All rights reserved.

Has great simulations related to various psych topics. Mostly use the ones on research/stats for IB.

the implications of a "large" p-value, i.e. one that is significantly larger than the alpha value set at the beginning of the study (for us, usually p<=0.05).

Did you know that the Chi-Squared Test is always one-sided? I sure didn't. Here is a simple explanation as to why and lots more interesting and "easy" statistical information