Hi, I have two collection of ordinal samples for a discrete variable related to two administration of an experiment.
Using Kolmogorov-Smirnov, I checked that I can't reject the Ho Hypothesis that the two distribution are the same.
Now I would like to check if the median of these two collection of samples are the same or not, under a statistical point of view.
I can't use 1 way Anova because the variable is discrete, for the same reason I can't use Friedman test.
What test should I use, if I could use Wilcoxon or Mann Whitney U test, could you tell me where I can find the theoretical bases of that?
Using Kolmogorov-Smirnov, I checked that I can't reject the Ho Hypothesis that the two distribution are the same.
Now I would like to check if the median of these two collection of samples are the same or not, under a statistical point of view.
I can't use 1 way Anova because the variable is discrete, for the same reason I can't use Friedman test.
What test should I use, if I could use Wilcoxon or Mann Whitney U test, could you tell me where I can find the theoretical bases of that?