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MMLU / There are several methods for estimating the test reliability, like the INTERNAL…

Problem

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question

There are several methods for estimating the test reliability, like the INTERNAL CONSISTENCY RELIABILITY for example. From your knowledge about this topic, find the correct definition of it.

choices

  1. administer 2 equivalent forms of a test to same people and correlate
  2. administer test twice to same people and then correlate scores
  3. correlations among individual test items
  4. they are not used for an unstable trait

subject

professional_psychology

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Official source

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