I'm looking for a non-parametric (!) alternative to the Friedman test. I have > 2 subjects and measured one quantity per subject. I want to know whether there is a significant difference between any of these subjects. Please note that I used the Friedman test before because there were repeated measured per subject.
Is the Kruskal-Wallis test suitable here? Can you recommend any post-hoc test to identify which of the subjects are significantly different?