Power of the simultaneous tests.

<p>Comparison of the estimated power of the max- test using a heteroscedastic consistent covariance estimation (max-+HC3) and of the Tukey-Kramer test (Tukey) assessing all pairwise comparisons of group effects in models under homoscedasticity (A), under heteroscedasticity with smaller variances in the smaller groups (B) and under heteroscedasticity with smaller variances in the larger groups (C). The total number of observations was unbalancedly distributed to the four groups.