The Significance of Difference Between Means Without Reference to The Frequency Distribution Function  

Oleh:

Festinger, Leon

Jenis: Article from Journal - e-Journal
Dalam koleksi: Psychometrika: A Journal of Quantitative Psychology vol. 11 no. 2 (Jun. 1946), page 97-105.
Topik: Difference; Means; Frequency Distribution Function
Fulltext: The Significance of Difference Between Means Without Reference to The Frequency Distribution Function.pdf (453.53KB)

Isi artikel

Most existing tests for significance of difference between means require specific assumptions concerning the distribution function in the parent population. The need for a test which can be applied without making any such assumption is stressed. Such a statistical test is derived. The application of the test involves converting scores to rank orders. The exact probabilities may then be calculated for specified differences between samples by means of which the null hypothesis may be tested. The application of the test is simple and requires a minimum of calculation. The test loses in precision because of the conversion to rank orders but gains in generality since it may be safely used with any kind of distribution.

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