Determining the Optimal Number of Alternatives to a Multiple-Choice Test Item: An Information Theoretic Perspective

Abstract

This study examines the question of the optimal number of choices on a multiple-choice test from an information theory perspective. Results are compared to addressing this question using more traditional statistical approaches. Based on information theory, the study reveals that, in general, three choices to a multiple-choice test item seem optimal. This finding verifies what other researchers have found from statistical and observational (item analysis) approaches.

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