How does the test statistic differ for a t test using the repeated measures versus the matched-samples design?
A. Using the matched-samples design, we analyze raw scores, whereas using the repeated measures, we analyze difference scores before computing the test statistic for the related-samples t test.
B. Using the repeated-measures design, we analyze raw scores, whereas using the matched-samples design, we analyze difference scores before computing the test statistic for the related-samples t test.
C. Using the repeated-measures design, we treat each pair of scores as related; we do not treat each pair of scores as related using the matched-samples design.
D. The test statistic for the repeated measures and the matched-samples design does not differ; the test statistic is computed the same.
Ans: D
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