Question: The test retest method is one way of establishing the reliability
The test–retest method is one way of establishing the reliability of a test. The test is administered, and then, at a later date, the same test is readministered to the same individuals. The correlation coefficient is computed between the two sets of scores. The following test scores were obtained in a test–retest situation.
Find r and set a 95% confidence interval for r.
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