A Cosine Approximation to the Normal Distribution  

Oleh:

Raab, David H. ; Green, Edward H.

Jenis: Article from Journal - e-Journal
Dalam koleksi: Psychometrika: A Journal of Quantitative Psychology vol. 26 no. 4 (Dec. 1961), page 447-450.
Topik: Cosine Approximation; Normal Distribution
Fulltext: 2604_1010.pdf (131.67KB)

Isi artikel

A cosine function is suggested to approximate the normal distribution as a device for simplifying algebraic manipulations of the latter. Numerical evaluations remain straightforward and employ only the commonly available trigonometric tables. A method of visual curve fitting requiring only an oscilloscope is also described.

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