does a permutation test have a time effect when to do a permutation test with repeatable measures why should a permutation experiment work why would the welch test be performed in a permutation experiment how to use permutation testing does repeating repeated measures cause time effects? how to test permutation with repeated measures does permutation test work does bootstrapping and permutation test need unbiased estimators how to permute a variable in a test does the welch test work in permutation why would permutation test be performed which method is used to collect a measure? why do permutation tests not work why does permutation testing work when to use permutation tests why do permutations have different measures how many variables do permutation tests use what is the difference between a welch or levene test, and a permutation test? why is permutation test different