The Maximum Expected Correlation Between Two Multiple-Choice Tests  

Oleh:

Horst, Paul

Jenis: Article from Journal - e-Journal
Dalam koleksi: Psychometrika: A Journal of Quantitative Psychology vol. 19 no. 4 (Dec. 1954), page 291-296.
Topik: Maximum Expected Correlation; Multiple-Choice Tests
Fulltext: Vol 19 No 4 Dec 1954 p.291-296.pdf (210.46KB)

Isi artikel

A formula is derived which gives the maximum expected correlation between two multiple-choice tests as a function of the distributions of proportions correct for the items in the two tests and the probability of chance success. The formula is similar to one derived by Carroll based on “true” item difficulties. A numerical example is provided.

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