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Error of Measurement1
Estimation (Mathematics)1
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Maximum Likelihood Statistics1
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Lord, Frederic M.1
Wingersky, Marilyn S.1
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An Investigation of Methods for Reducing Sampling Error in Certain IRT Procedures.
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Wingersky, Marilyn S.; Lord, Frederic M. – 1983
The sampling errors of maximum likelihood estimates of item-response theory parameters are studied in the case where both people and item parameters are estimated simultaneously. A check on the validity of the standard error formulas is carried out. The effect of varying sample size, test length, and the shape of the ability distribution is…
Descriptors: Error of Measurement, Estimation (Mathematics), Item Banks, Latent Trait Theory