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Marginal Distributions for the Estimation of Proportions in m Groups

Published online by Cambridge University Press:  01 January 2025

Charles Lewis
Affiliation:
The University of Illinois
Ming-mei Wang
Affiliation:
The University of Iowa
Melvin R. Novick
Affiliation:
The University of Iowa The American college Testing program

Abstract

A Bayesian Model II approach to the estimation of proportions in m groups (discussed by Novick, Lewis, and Jackson) is extended to obtain posterior marginal distributions for the proportions. It is anticipated that these will be useful in applications (such as Individually Prescribed Instruction) where decisions are to be made separately for each proportion, rather than jointly for the set of proportions. In addition, the approach is extended to allow greater use of prior information than previously and the specification of this prior information is discussed.

Type
Original Paper
Copyright
Copyright © 1975 Psychometric Society

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Footnotes

*

We are grateful to a reviewer for suggestions that made possible a more concise and complete presentation of our work.

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