Standard error of an equating by item response theory
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Standard error of an equating by item response theory
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1982
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Abstract
A formula is derived for the asymptotic standard
error of a true-score equating by item response
theory. The equating method is applicable when the
two tests to be equated are administered to different
groups along with an anchor test. Numerical
standard errors are shown for an actual equating
(1) comparing the standard errors of IRT, linear,
e and equipercentile methods and (2) illustrating the
effect of the length of the anchor test on the standard
error of the equating.
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Lord, Frederic M. (1982). Standard error of an equating by item response theory. Applied Psychological Measurement, 6, 463-472. doi:10.1177/014662168200600407
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doi:10.1177/014662168200600407
Suggested citation
Lord, Frederic M.. (1982). Standard error of an equating by item response theory. Retrieved from the University Digital Conservancy, https://hdl.handle.net/11299/101548.
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