Generally, the higher the magnitude of r between the scores of both groups the more powerful is the t test for correlated groups.

Name: Generally, the higher the magnitude of r between the scores of both groups the more powerful is the t test for correlated groups.
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A higher magnitude of r indicates a stronger correlation between the scores of both groups, which leads to a larger difference in means and a more powerful t test for correlated groups.

Generally, the Higher the Magnitude of R Between the Scores