In order to find critical values of Q in a table, one has to know which of these?
a. degrees of freedom between
b. the probability of a Type II error
c. the power of the experiment
d. the number of treatment levels or groups
D
Q is a statistic that indicates how far apart group means must be in order to be "significantly" different. The Q statistic is calculated for Tukey's HSD test. You must know alpha, k (the number of means to be compared or the number of groups), and the degrees of freedom associated with the denominator of the F ratio (degrees of freedom within groups).
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