Statistics/KruskalWallis version 0.01
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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.