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Direct linkPomplun, Mark; Omar, Hafidz; Custer, Michael – Educational and Psychological Measurement, 2004
The present study compares vertical scaling results for the Rasch model from BILOG-MG and WINSTEPS. The item and ability parameters for the real and simulated mathematics tests were scaled across five grades, second to sixth. The simulated data were based on real data for a series of mathematics tests for Grades 2 to 6. The results from WINSTEPS…
Descriptors: Elementary Education, Scaling, Mathematics Tests, Item Response Theory
