Which of the following terms is an index of how consistent the results of a test are over time?

Question

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Test-retest reliability is the index of how consistent the results of a test are over time as it measures the correlation between the scores of individuals who take the same test twice. Alternate form reliability measures the correlation between scores on different versions of the same test. Internal reliability measures the consistency of items within a single test. Test-retest validity is not a valid term.

Which of the Following Terms Is an Index of How