Properties of the Item Score Matrix  

Oleh:

MacLean, Angus G.

Jenis: Article from Journal - e-Journal
Dalam koleksi: Psychometrika: A Journal of Quantitative Psychology vol. 23 no. 1 (Mar. 1958), page 47-53.
Topik: Item Score Matrix; Equally Weighted Items; Differentially Weighted Items
Fulltext: Vol 23 no.1 March 1958 p.47-53.pdf (216.51KB)

Isi artikel

A method of deriving from the item score matrix all the usual statistics describing the performance on a test of a group of examinees is given. Since this matrix usually is not actually written out, but is implicit in a set of punched cards, a method of working from a more compact matrixF is described. A numerical example is presented. Applications and advantages of the method are cited, as compared with that of recording only the examinees' test scores and the item difficulties.

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