Other Useful Links
Official website of SPSS Inc.
Hyperstat Online Statistics Textbook
This website provides a range of statistical resources (including the Z Score Calculator listed above).
This website contains a wealth of links to a wide range of statistical resources available on the web.
An on-line glossary of statistical terms, produced by the STEPS TLTP Project.
Centre for Multilevel Modelling, Bristol University
Lots of information and resources on multilevel modelling, including the ability to download the full version of the multilevel modelling software package MLwiN 2.02 for free if you are an academic. There is also an excellent and comprehensive User Guide for MLwiN 2.02 that can be downloaded for free as well as a training version that is also freely available to download.