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A Method of Estimating Accuracy of Test Scoring

Published online by Cambridge University Press:  01 January 2025

Walter L. Deemer
Walter L. Deemer*
Affiliation:
Harvard University, Cambridge, Massachusetts
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Abstract

When errors of test scoring obey a Poisson frequency law (theoretical considerations suggest that they do), the method described may be used for finding the upper fiducial limits of scoring errors per paper. A criterion is suggested for establishing tolerance limits on scoring errors, and a method is given (1) for finding the probability of being wrong in the statement that the tolerance limit is being met for a given size sample or (2) for finding the size of sample that will make this probability not greater than some fixed value.

Type
Original Paper
Information
Psychometrika , Volume 7 , Issue 1 , February 1942 , pp. 65 - 73
Copyright
Copyright © 1942 The Psychometric Society

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