Hello,

What about the median ranks? This test is based on ranks.

Regards,
Pascal


Le 12/12/15 18:04, Omphalodes Verna a écrit :
Dear list!

I work with multiple Kruskal-Wallis test (kruskalmc, package pgirmess), which 
evaluates differences in medians among groups (5 groups). A result of a test is 
significant differences among some groups, while median values are the same for 
4 groups (using tapply). Why?

p.s.: number of samples in groups vary from 50 to 4900.

Thanks to all, OV

.

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