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The Relative Efficiency of Two Tests as a Function of Ability Level [microform] / Frederic M. Lord
Bib ID 5245643
Format BookBook, MicroformMicroform, OnlineOnline
Author
Lord, Frederic M
 
Online Versions
Description [Washington, D.C.] : Distributed by ERIC Clearinghouse, 1973 
16 p. 
Summary

A new formula is developed for the relative efficiency of two tests measuring the same trait. The formula expresses relative efficiency solely in terms of the standard errors of measurement and, surprisingly, the frequency distributions of true scores. Approximate methods for estimating relative efficiency may make this function routinely available. A numerical illustration compares new and old estimates of relative efficiency for subtests from the Scholastic Aptitude Test. (Author)

Notes

Sponsoring Agency: National Science Foundation, Washington, DC.

May also be available online. Address as at 14/8/18: https://eric.ed.gov/

Reproduction Microfiche. [Washington D.C.]: ERIC Clearinghouse microfiches : positive. 
Subjects Error of Measurement.  |  Research Reports.  |  Statistical Analysis.  |  Test Interpretation.  |  Testing.  |  True Scores.
Other authors/contributors Educational Testing Service, Princeton, NJ
Available From ERIC 

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