Given the Following Information About a Test, Compute the KR-21

question 51

Multiple Choice

Given the following information about a test, compute the KR-21 reliability estimate. The test has 20 items, the median is 12, the mode is 14, the mean is 12, and the standard deviation is 3.

• A) .33
• B) .37
• C) .45
• D) .49

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