FisherZ2R function
Description
Fisher Z to R back-transformation. FISHERZ2R(z) returns the inverse of the Fisher R to Z transformation.
r is calculated as follows:
$$ r = \frac {e^{2z} -1} {e^{2z} + 1} $$
The argument r can be a real number or a matrix. When it is a matrix, the function returns a matrix with the same dimensions and with the FISHERZ2R function applied to all elements.
Examples
FISHERZ2R(1.2) returns 0.83365
FISHERZ2R({1.2,1.4}) returns {0.833654607012,0.885351648202}
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