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Estimation (Mathematics)	2
Simulation	2
Statistical Distributions	2
Ability	1
Educational Assessment	1
Evaluation Methods	1
Graphs	1
Item Response Theory	1
Mathematical Models	1
Mathematics Tests	1
Maximum Likelihood Statistics	1
Regression (Statistics)	1
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Journal of Educational and…

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Bloxom, Bruce	1
Muraki, Eiji	1
Yamamoto, Kentaro	1

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Reports - Evaluative	2
Journal Articles	1
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National Assessment of…	2
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Non-Linear Transformation of IRT Scale To Account for the Effect of Non-Normal Ability Distribution of the Item Parameter Estimation.

Yamamoto, Kentaro; Muraki, Eiji – 1991

The extent to which properties of the ability scale and the form of the latent trait distribution influence the estimated item parameters of item response theory (IRT) was investigated using real and simulated data. Simulated data included 5,000 ability values randomly drawn from the standard normal distribution. Real data included the results for…

Descriptors: Ability, Estimation (Mathematics), Graphs, Item Response Theory

Linking to a Large-Scale Assessment: An Empirical Evaluation.

Peer reviewed

Bloxom, Bruce; And Others – Journal of Educational and Behavioral Statistics, 1995

Develops and evaluates the linkage of the Armed Services Vocational Aptitude Battery to the mathematics scale of the National Assessment of Educational Progress. The accuracy of the proficiency distribution estimated from the projection was close to the accuracy of the distribution estimated from the large scale assessment. (SLD)

Descriptors: Educational Assessment, Estimation (Mathematics), Evaluation Methods, Mathematics Tests