If other factors are held constant,which of the following sets of data is most likely to produce a significant value for the repeated-measures t statistic?
A)n = 15 and SS = 10 for the difference scores
B)n = 15 and SS = 100 for the difference scores
C)n = 30 and SS = 10 for the difference scores
D)n = 30 and SS = 100 for the difference scores

Question

Quizplus · Accepted Answer

The repeated-measures t statistic is more likely to be significant with a larger sample size (n) and a smaller sum of squares (SS) for the difference scores, as this suggests less variability and more reliability in the differences measured. Therefore, option C (n = 30 and SS = 10) is most likely to produce a significant value because it combines a relatively large sample size with low variability in the difference scores.

If Other Factors Are Held Constant,which of the Following Sets