Kruskal-Wallis equality-of-populations rank test


New Member
Dear Colleagues

I am using KW test to check the differences between Four different types of companies and I use four variables, so I check for each variables on each type each time. I mean the 1st var on 1st type, the 2nd var on 1st type and so on..

1- so with some variables it don't do the test and gives me "too many values" where I am using stata 11.:shakehead

2- some I got results with 1st type 1st var as follows.

chi-squared = 290.697 with 172 d.f.
probability = 0.0001

chi-squared with ties = 388.261 with 172 d.f.
probability = 0.0001

so any help in explanation highly appreciated.