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Journal of Experimental…1
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Random Guessing, Correction for Guessing, and Reliability of Multiple-Choice Test Scores
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Frary, Robert B.; And Others – Journal of Experimental Education, 1977
To date a theoretical basis has not been developed for determining changes in reliability when score points from random guessing are eliminated and those from non-randon guessing are retained. This paper presents a derivation of an expression for the reliability coefficient which displays the effect of deleting score components due to random…
Descriptors: Data Analysis, Guessing (Tests), Multiple Choice Tests, Scoring Formulas
Empirical Option Weighting with a Correction for Guessing.
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Reilly, Richard R. – 1972
Because previous reports have suggested that the lowered validity of tests scored with empirical option weights might be explained by a capitalization of the keying procedures on omitting tendencies, a procedure was devised to key options empirically with a "correction-for-guessing" constraint. Use of the new procedure with Graduate…
Descriptors: Correlation, Data Analysis, Guessing (Tests), Mathematical Applications