Discuss the assumptions associated with the within-subjects ANOVA.
What will be an ideal response?
The first two test assumptions for the within-subjects ANOVA are the same as those for the between-subjects ANOVA.
(1) The population of difference scores must be a normal distribution.
(2) The scores from different participants within each sample must be independent.
However, the third assumption for the within-subjects ANOVA is a new assumption known as the sphericity assumption. This assumption is that pairs of scores in the population for the same individuals have similar variability. The new assumption is stated as:
(3) Sphericity--in the population of scores, the differences between pairs of scores from the same individuals are equal.
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What will be an ideal response?
The man least likely to experience "male menopause" is
Hank, who is 50 and recently has been laid off. Carl, who is 48 and having marital problems. Mark, who is 47 and recovering from a serious heart attack. Bob, who is 55 and has decided to retire early.