The Determination of Item Difficulty when Chance Success is a Factor  

Oleh:

Guilford, J. P.

Jenis: Article from Journal - e-Journal
Dalam koleksi: Psychometrika: A Journal of Quantitative Psychology vol. 1 no. 4 (Dec. 1936), page 259-264.
Topik: Item Difficulty; Chance Success
Fulltext: The Determination of Item Difficulty when Chance Success is a Factor.pdf (238.13KB)

Isi artikel

The evaluation of the level of difficulty of a test item is ordinarily derived from the proportion of a specified population passing or failing the item. With items that have a limited number of alternative responses there must be a correction in this proportion to make allowance for chance success. A table of corrected proportions is given for different numbers of alternatives varying from two to eight.

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