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Smoothing the joint and marginal distributions of scored two‐way contingency tables in test equating

 

作者: Paul R. Rosenbaum,   Dorothy Thayer,  

 

期刊: British Journal of Mathematical and Statistical Psychology  (WILEY Available online 1987)
卷期: Volume 40, issue 1  

页码: 43-49

 

ISSN:0007-1102

 

年代: 1987

 

DOI:10.1111/j.2044-8317.1987.tb00866.x

 

出版商: Blackwell Publishing Ltd

 

数据来源: WILEY

 

摘要:

If the row and column variables of a two‐way contingency table have numerical scores, then the table is said to be scored. Scored contingency tables play an important role in equating two exams containing common items: the tables are typically quite large, and often relatively sparse, and exhibit strong positive dependence. For equating, stable, monotone estimates are required for the conditional distribution of the score on the new items given the score on the common items. We obtain such‐estimates by using generalized log‐linear models in a new way: we smooth both the interior and the margins of the two‐way table, yielding the smoothest joint distribution on the table having the same low‐order moments as the observ

 

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