Statistics/KruskalWallis version 0.01
===============================

Statistics::KruskalWallis - Perl module to perform the Kruskall-Wallis test,
use to test if differences exist between 3 or more independant groups of
unequal sizes.

Also includes the post-hoc Newman-Keuls test, to test if the differences
between pairs of the tested group are significant.

INSTALLATION

To install this module type the following:

   perl Makefile.PL
   make
   make test
   make install

DEPENDENCIES

Requires Statistics::Distributions to turn Kruskal Wallis statistics into p values.

REFERENCES

Kruskal, W. H. (1952). A nonparametric test for the several sample problem.  Annals of Mathematical Statistics, 23, 525-540.
Kruskal, W. H. and Wallis, W. A. (1952). Use of ranks in one-criterion variance analysis. Journal of the American Statistical Association, 47, 583-621.

Keuls, M (1952). The studentized range in connection with an analysis of variance. Euphytica 1, 112-122.
Newman,D (1939). The distribution of the range in samples of a normal population, expressed in terms of an independent estimate of standard deviation. Biometrika 31, 20-30.


COPYRIGHT AND LICENCE

Copyright 2003 Star Technology Group Ltd.
This library is free software; you can redistribute it and/or modify
it under the same terms as Perl itself.





