Calculating the random guess scores of multiple-response and matching test items

Draaijer, Silvester; Jordan, Sally and Ogden, Helen (2018). Calculating the random guess scores of multiple-response and matching test items. In: Proceedings of the 2017 International Technology Enhanced Assessment Conference (TEA 2017), Communications in Computer and Information Science (CCIS) Series, Springer, pp. 210–222.

DOI: https://doi.org/10.1007/978-3-319-97807-9_16

Abstract

For achievement tests, the guess score is often used as a baseline for the lowest possible grade for score to grade transformations and setting the cut scores. For test item types such as multiple-response, matching and drag-and-drop, determin-ing the guess score requires more elaborate calculations than the more straight-forward calculation of the guess score for True-False and multiple-choice test item formats. For various variants of multiple-response and matching types with respect to dichotomous and polytomous scoring, methods for determining the guess score are presented and illustrated with practical applications. The implica-tions for theory and practice are discussed.

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