Final answer:
Content validity measurement is not used for estimating the reliability of a test; it is used for determining validity. Reliability assesses consistency, while validity assesses accuracy of measurement.
Step-by-step explanation:
The reliability of a test refers to its consistency in measuring what it is intended to measure. The question pertains to which method is NOT used for estimating the reliability of a test. The options are internal consistency, retest estimate, internal comparison estimate, equivalent form estimate, and content validity measurement.
Among these options, E) content validity measurement is NOT a method used for estimating reliability, rather it is a method used for determining validity. Validity concerns how well a test measures what it is supposed to measure, which is distinct from reliability.
Internal consistency, test-retest reliability, and equivalent forms reliability are all methods used to measure different aspects of a test's reliability. Content validity is a measure of validity and not reliability. Therefore, to answer the quiz question, content validity measurement is the method that is NOT used for estimating the reliability of a test.