Peer reviewedERIC Number: EJ118440
Record Type: CIJE
Publication Date: 1975
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The 27 Percent Rule Revisited
D'Agostino, Ralph B.; Cureton, Edward E.
Educational and Psychological Measurement, 35, 1, 47-50, Spr 75
The problem of selecting the size of the tails from a sample drawn from a distribution of test scores for item analysis study is discussed. (Author)
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