Question

Which of the following statements is not consistent with the assumptions necessary when computing a repeated measures t statistic?

a. Independence of observations
b. Homogeneity of variances
c. Normal distribution of differences
d. Random assignment of subjects

Answer 1

The statement that is not consistent with the assumptions necessary when computing a repeated measures t statistic is d. Random assignment of subjects.

Step-by-step explanation:

The statement that is not consistent with the assumptions necessary when computing a repeated measures t statistic is d. Random assignment of subjects.

When computing a repeated measures t statistic, the assumption of random assignment of subjects is not needed. This assumption is relevant for independent group designs, where subjects are randomly assigned to different groups.

The other assumptions necessary for computing a repeated measures t statistic are:

• Independence of observations: Each pair of observations within a group is independent.
• Homogeneity of variances: The variances of the differences between paired observations are equal.
• Normal distribution of differences: The differences between paired observations are normally distributed.