ANOVA
hypotheses:
Data should
come from independent random samples, all Normally distributed with the same standard deviation
Kruskal-Wallis
hypotheses:
1. Data should come from independent random
samples, the response has a continuous (but not necessarily Normal) distribution.
2. Data should come from independent random
samples, the response has a continuous (but not necessarily Normal) distribution, and the
samples come from population distributions
of the same shape (not necessarily Normal).
Comparing several samples: the Kruskal-Wallis test
