A Modified Frequency Estimation Equating Method for the Common-Item Nonequivalent Groups Design

Autor/inn/en	Wang, Tianyou; Brennan, Robert L.
Titel	A Modified Frequency Estimation Equating Method for the Common-Item Nonequivalent Groups Design
Quelle	In: Applied Psychological Measurement, 33 (2009) 2, S.118-132 (15 Seiten) PDF als Volltext Verfügbarkeit
Sprache	englisch
Dokumenttyp	gedruckt; online; Zeitschriftenaufsatz
ISSN	0146-6216
DOI	10.1177/0146621608314607
Schlagwörter	Computation; Bias; Comparative Analysis; Statistical Analysis; Simulation; Item Response Theory; Tests + Suchen Sie Ihr Suchwort? Statistische Analyse; Simulation program; Simulationsprogramm; Item-Response-Theorie; Examination; Prüfung; Examen
Abstract	Frequency estimation, also called poststratification, is an equating method used under the common-item nonequivalent groups design. A modified frequency estimation method is proposed here, based on altering one of the traditional assumptions in frequency estimation in order to correct for equating bias. A simulation study was carried out to compare equating errors for the modified frequency estimation method, the traditional frequency estimation method, and the chained equipercentile method. The results show that the modified frequency estimation method performs better than the traditional frequency estimation method and, under most circumstances, also performs better than the chained equipercentile method. (Contains 5 tables, 4 figures and 1 note.) (As Provided).
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Erfasst von	ERIC (Education Resources Information Center), Washington, DC
Update	2017/4/10