To compute the related samples t test,we assume independence within groups,but not between groups.

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In a related samples t-test, the assumption of independence is violated within groups, but not between groups. This is because the same subjects are being measured twice, so their responses are not independent of each other. However, the assumption of independence is met between groups, as the subjects in each group are different.

To Compute the Related Samples T Test,we Assume Independence Within