Analyse-it for Microsoft Excel provides 17 non parametric statistical tests for Microsoft Excel.  Non parametric tests are useful in cases where the stringent requirements of a parametric test cannot be met, or where the data analysed is not continuous.  For example, ordinal or nominal categorical data can only be analysed using non parametric statistics.

Analyse-it includes many non parametric tests from the following books. For more information on these books, and where to buy them, see our recommended books page.

[1]	Practical Non-parametric Statistics (2nd Edition). Conover W.J. ISBN 0-471-02867-3 1980; 122-128.
[2]	Non-parametrics: Statistical Methods based on Ranks. Lehman E.L. Holden-Day San Francisco 1975; 175-85;
[3]	Non-parametric Statistics for the Behavioral Sciences (2nd Edition). Siegel S., Castellan Jr N.J. ISBN 0-07-100326-6 1988; 80-87.

Click here to read more about Analyse-it and to download a free 30-day trial to analyse your own data.