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Direct linkRanger, Jochen; Brauer, Kay – Journal of Educational and Behavioral Statistics, 2022
The generalized S-X[superscript 2]-test is a test of item fit for items with polytomous responses format. The test is based on a comparison of the observed and expected number of responses in strata defined by the test score. In this article, we make four contributions. We demonstrate that the performance of the generalized S-X[superscript 2]-test…
Descriptors: Goodness of Fit, Test Items, Statistical Analysis, Item Response Theory
