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A Comparison of Item Parameter Estimates and Ability Parameter Estimates Obtained by Different Methods Implemented by BILOG.

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Buhr, Dianne C.; Algina, James – 1986

The focus of this study is on the estimation procedures implemented in BILOG, a computer program. One purpose is to compare the item parameter estimates produced by various procedures available in BILOG. Four different models are used: the one, two, and three parameter model and a three parameter model with common guessing parameters. The results…

Descriptors: Ability, Bayesian Statistics, Comparative Analysis, Computer Oriented Programs