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Spray, Judith A.1
Welch, Catherine J.1
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Spray, Judith A.; Welch, Catherine J. – 1986
The purpose of this study was to examine the effect that large within-examinee item difficulty variability had on estimates of the proportion of consistent classification of examinees into mastery categories over two test administrations. The classification consistency estimate was based on a single test administration from an estimation procedure…
Descriptors: Adults, Difficulty Level, Estimation (Mathematics), Mathematical Models