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.