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Use of Continuous Exponential Families to Link Forms via Anchor Tests. Research Report. ETS RR-11-11
Download full textHaberman, Shelby J.; Yan, Duanli – Educational Testing Service, 2011
Continuous exponential families are applied to linking test forms via an internal anchor. This application combines work on continuous exponential families for single-group designs and work on continuous exponential families for equivalent-group designs. Results are compared to those for kernel and equipercentile equating in the case of chained…
Descriptors: Equated Scores, Statistical Analysis, Language Tests, Mathematics Tests
Sinharay, Sandip; Haberman, Shelby J.; Jia, Helena – Educational Testing Service, 2011
Standard 3.9 of the "Standards for Educational and Psychological Testing" (American Educational Research Association, American Psychological Association, & National Council for Measurement in Education, 1999) demands evidence of model fit when an item response theory (IRT) model is used to make inferences from a data set. We applied two recently…
Descriptors: Item Response Theory, Goodness of Fit, Statistical Analysis, Language Tests
