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Download full textMarco, Gary L.; And Others – 1985
Three item response models were evaluated for estimating item parameters and equating test scores. The models, which approximated the traditional three-parameter model, included: (1) the Rasch one-parameter model, operationalized in the BICAL computer program; (2) an approximate three-parameter logistic model based on coarse group data divided…
Descriptors: College Entrance Examinations, Comparative Analysis, Computer Software, Equated Scores
