On the Number of Significant Findings to be Expected by Chance  

Oleh:

Block, Jack

Jenis: Article from Journal - e-Journal
Dalam koleksi: Psychometrika: A Journal of Quantitative Psychology vol. 25 no. 4 (Dec. 1960), page 369-380.
Topik: Significant Findings; The Problem in the Dichotomous-Response Situation; A Suggested Solution; The Solution. Applied
Fulltext: 2504_1007.pdf (734.35KB)

Isi artikel

When multiple significance tests are computed, a certain number of “significant” findings will emerge simply because of chance fluctuations. In the present paper, some factors affecting the number of nominally significant results are elaborated and a general method is suggested which permits unbiased inference as to the significance of a set of findings,as a set. The method advocated employs a high speed computer to generate empirically a sampling distribution tailormade to a particular data matrix. The method is illustrated in the case of dichotomous response to inventory items, where it is found that the statistical model still often used as a basis for estimation is overly conservative. Some problems in the application of the method are discussed.

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