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Keuning, Jos; Hemker, Bas – Educational Research and Evaluation, 2014
The data collection of a cohort study requires making many decisions. Each decision may introduce error in the statistical analyses conducted later on. In the present study, a procedure was developed for estimation of the error made due to the composition of the sample, the item selection procedure, and the test equating process. The math results…
Descriptors: Foreign Countries, Cohort Analysis, Statistical Analysis, Error of Measurement