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A Program for Estimating the Relative Efficiency of Tests at Various Ability Levels, for Equating True Scores, and for Predicting Bivariate Distributions of Observed Scores [microform] / Martha Stocking and Others
Bib ID 5259894
Format BookBook, MicroformMicroform, OnlineOnline
Author
Stocking, Martha
 
Online Versions
Description [Washington, D.C.] : Distributed by ERIC Clearinghouse, 1973 
20 p. 
Summary

For two tests measuring the same trait, the program, BIV20, equates the scores using the two True score distributions estimated by the univariate method 20 program (see Wingersky, Lees, Lennon, and Lord, 1969) and, with these equated true scores and their distributions, estimates the bivariate distribution scores and the relative efficiency of the two tests at various ability levels. The method is described and formulas given in the appendix. If desired, this estimated distribution is compared to an actual bivariate observed-score distribution provided by the user, and a chi-square between the estimated and actual distributions is computed. The program is written in Fortran IV for the IBM 360/65. Its only restriction is that the maximum number of items for each test is 50. (Author/RC)

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 Computer Programs.  |  Equated Scores.  |  Statistical Analysis.  |  Test Reliability.  |  Test Results.  |  Test Validity.  |  True Scores.
Form/genre Reports, Research.
Other authors/contributors Educational Testing Service, Princeton, NJ
Available From ERIC 

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