Journal of Official Statistics, Vol.9, No.1, 1993. pp. 189–201
Some Research Problems Encountered at the Educational Testing Service
Howard Wainer, Eugene G. Johnson, Charles Lewis, and Robert J. Mislevy
Abstract:The Educational Testing Service is the largest private testing organization in the world. In the course of fulfilling its mission many perplexing statistical problems are encountered. In this article each of four ETS statisticians describe a problem that currently engages their attention.
Keywords:Nonignorable nonresponse; Bayesian estimation; choice; missing data; Hilbert.
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