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Direct linkZhang, Zhonghua – Applied Measurement in Education, 2020
The characteristic curve methods have been applied to estimate the equating coefficients in test equating under the graded response model (GRM). However, the approaches for obtaining the standard errors for the estimates of these coefficients have not been developed and examined. In this study, the delta method was applied to derive the…
Descriptors: Error of Measurement, Computation, Equated Scores, True Scores
