Approximation for Bayesian Ability Estimation.

Tsutakawa, Robert K.; Soltys, Michael J.

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Peer reviewed

ERIC Number: EJ378311

Record Type: Journal

Publication Date: 1988

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Approximation for Bayesian Ability Estimation.

Tsutakawa, Robert K.; Soltys, Michael J.

Journal of Educational Statistics, v13 n2 p117-30 Sum 1988

An approximation procedure is proposed for the posterior means and standard deviation of the ability parameter in an item response model. The method is illustrated for the two-parameter logistic model using data from a 39-item American College Testing mathematics test. The effect of sample size is considered. (SLD)

Descriptors: Ability, Academic Ability, Bayesian Statistics, Equations (Mathematics), Estimation (Mathematics), Higher Education, Latent Trait Theory, Mathematics Tests, Statistical Analysis

Publication Type: Journal Articles; Reports - Evaluative

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Language: English

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