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Educational Measurement:…2
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Quantifying Error and Uncertainty Reductions in Scaling Functions: An ITEMS Module
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Moses, Tim – Educational Measurement: Issues and Practice, 2014
This module describes and extends X-to-Y regression measures that have been proposed for use in the assessment of X-to-Y scaling and equating results. Measures are developed that are similar to those based on prediction error in regression analyses but that are directly suited to interests in scaling and equating evaluations. The regression and…
Descriptors: Scaling, Regression (Statistics), Equated Scores, Comparative Analysis
NCME Instructional Module: IRT Equating Methods.
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Cook, Linda L.; Eignor, Daniel R. – Educational Measurement: Issues and Practice, 1991
This paper provides the basis for understanding score equating through item response theory (IRT). Theoretical justifications and practical advantages of IRT true-score test procedures are discussed. Three steps in the equating process are specified, and a self-test is included. (SLD)
Descriptors: Equated Scores, Equations (Mathematics), Item Response Theory, Mathematical Models