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Item Analysis of Achievement Tests Based on Small Numbers of Examinees.
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Kromrey, Jeffrey D.; Bacon, Tina P. – 1992
A Monte Carlo study was conducted to estimate the small sample standard errors and statistical bias of psychometric statistics commonly used in the analysis of achievement tests. The statistics examined in this research were: (1) the index of item difficulty; (2) the index of item discrimination; (3) the corrected item-total point-biserial…
Descriptors: Achievement Tests, Comparative Analysis, Difficulty Level, Estimation (Mathematics)