Derivations of Observed Score Linear Equating Methods Based on Test Score Models for the Common Item Nonequivalent Populations Design.

Woodruff, David

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Peer reviewed

ERIC Number: EJ351765

Record Type: Journal

Publication Date: 1986

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Derivations of Observed Score Linear Equating Methods Based on Test Score Models for the Common Item Nonequivalent Populations Design.

Woodruff, David

Journal of Educational Statistics, v11 n4 p245-57 Win 1986

The purpose of the present paper is to derive linear equating methods for the common item nonequivalent populations design from explicitly stated congeneric type test score models. The equating methods developed are compared with previously developed methods and applied to five professionally constructed examinations administered to approximately 4,000 examiners. (JAZ)

Descriptors: Equated Scores, Equations (Mathematics), Mathematical Models, Scores, Test Items, Test Theory, Testing

Publication Type: Journal Articles; Reports - Research

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Audience: N/A

Language: English

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