Estimation of Error Variances of Test Scores  

Oleh:

Keats, John A.

Jenis: Article from Journal - e-Journal
Dalam koleksi: Psychometrika: A Journal of Quantitative Psychology vol. 22 no. 1 (Mar. 1957), page 29-41.
Topik: Tesl Scores; Standard Error of Measurement; Proof of Distribution; Error Variance; Effect of Non-Equivalence
Fulltext: Vol 22 No.1 Mar 1957 p.29-41.pdf (362.13KB)

Isi artikel

The representation of test scores asn-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.

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