Estimation of Error Variances of Test Scores

1 March 1957

journal article
Published by Cambridge University Press (CUP) in Psychometrika

Vol. 22 (1) , 29-41
https://doi.org/10.1007/bf02289207

Abstract

The representation of test scores as n-dimensional points leads directly to an estimate of error variance at a particular score level in the case of equivalent items. Approximations are suggested for the case of non-equivalent items. These approximations are compared, with satisfactory results, with empirical data prepared by Dr. Mollenkopf.

Keywords

ERROR VARIANCES
APPROXIMATIONS
TEST SCORES
EQUIVALENT ITEMS
REPRESENTATION
VARIANCES OF TEST
SCORES ASN
DATA PREPARED

This publication has 4 references indexed in Scilit:

Sampling Fluctuations Resulting from the Sampling of Test Items
Psychometrika, 1955
ERROR OF MEASUREMENT VARIATION FOR MULTIPLE‐CHOICE TESTS
ETS Research Bulletin Series, 1951
Variation of the Standard Error of Measurement
Psychometrika, 1949
The Theory of the Estimation of Test Reliability
Psychometrika, 1937