A Device for Facilitating The Computation of The First Four Moments About The Mean  

Oleh:

Lyman, John ; Marchetti, Pietro V.

Jenis: Article from Journal - e-Journal
Dalam koleksi: Psychometrika: A Journal of Quantitative Psychology vol. 15 no. 1 (Mar. 1950), page 49-55.
Topik: Device; Computation; Evaluation of Apparatus
Fulltext: A Device for Facilitating The Computation of The First Four Moments About The Mean.pdf (284.22KB)

Isi artikel

A mechanical device is described which materially reduces the time, labor, and probability of errors which are involved in the computation of certain moments about the mean. The use of the device is illustrated with the computation of the mean, standard deviation,g 1 as a measure of skewness, andg 2 as a measure of kurtosis of data from a given study.

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