Suppose a one- way ANOVA procedure is being used to compare the means of five different populations. The number of sample means to examine using the Tukey- Kramer multiple comparisons test is ____

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The Tukey-Kramer multiple comparisons test examines all possible pairs of means when the sample sizes are unequal or equal. For five populations (or groups), the number of pairs of means to compare is given by the formula n(n-1)/2, where n is the number of groups. Substituting 5 for n gives 5(5-1)/2 = 20/2 = 10.

Suppose a One- Way ANOVA Procedure Is Being Used to Compare