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Item Response Theory1
Mathematics1
Scores1
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Journal of Educational…1
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Kim, Seonghoon1
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Generalization of the Lord-Wingersky Algorithm to Computing the Distribution of Summed Test Scores Based on Real-Number Item Scores
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Kim, Seonghoon – Journal of Educational Measurement, 2013
With known item response theory (IRT) item parameters, Lord and Wingersky provided a recursive algorithm for computing the conditional frequency distribution of number-correct test scores, given proficiency. This article presents a generalized algorithm for computing the conditional distribution of summed test scores involving real-number item…
Descriptors: Item Response Theory, Scores, Computation, Mathematics