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Correcting Point-Biserial and Biserial Correlation Coefficients for Chance SuccessUniversity of North Carolina at Chapel Hill Formulas are provided for correcting point-biserial and biserial item-test correlations for the effect of chance success by guessing. It is pointed out that these chance-corrected correlations may sometimes exceed unity.
Educational and Psychological Measurement, Vol. 47, No. 2,
359-360 (1987) |
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