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An Investigation of Factors Affecting Test Equating in Latent Trait Theory

The study investigated five factors which can affect the equating of scores from two tests onto a common score scale. The five factors studied were: (a) distribution type (i.e., normal versus uniform); (b) standard deviation of itemdifficulties (i.e., .68, .95, .99); (c) test length or number of test items (i.e., 50,100, 200); (d) number of common items (i.e., 10,20,30); and (e) sample size (i.e., 100, 300, 500). The significant two-way interaction effects were for common item length and test length, standard deviation of item difficulties and distribution type, and standard deviation of item difficulties and sample size.

Identiferoai:union.ndltd.org:unt.edu/info:ark/67531/metadc278079
Date08 1900
CreatorsSuanthong, Surintorn
ContributorsSchumacker, Randall E., Beyerlein, Michael Martin, Brookshire, William K.
PublisherUniversity of North Texas
Source SetsUniversity of North Texas
LanguageEnglish
Detected LanguageEnglish
TypeThesis or Dissertation
Formatvi, 78 leaves, Text
RightsPublic, Copyright, Copyright is held by the author, unless otherwise noted. All rights reserved., Suanthong, Surintorn

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