Sir Ronald Aylmer Fisher

Photograph courtesy of Professor A W F Edwards by kind permission of Joan Fisher Box
http://www.galtoninstitute.org.uk/Newsletters/GINL0306/university_of_cambridge_eugenics.htm

        Sir Ronald Aylmer Fisher, byname R.A. Fisher    (born February 17, 1890, London, England—died July 29, 1962, Adelaide, Australia), British statistician and geneticist who pioneered the application of statistical procedures to the design of scientific experiments.

在《The MacTutor History of Mathematics archive》
http://www-history.mcs.st-andrews.ac.uk/Biographies/Fisher.html

Fisher z-transform 在《苏联数学百科全书》的当前网络版
词条“Correlation (in statistics)”
http://www.encyclopediaofmath.org/index.php/Correlation_(in_statistics) 

If   one usually uses the Fisher z-transform, with   replaced by z according to the formula

Even at relatively small values the distribution of is a good approximation to the normal distribution with mathematical expectation

and variance . On this basis one can now define approximate confidence intervals for the true correlation coefficient .

For the distribution of the sample correlation ratio and for tests of the linearity hypothesis for the regression, see [3].