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Home MathPack Statis Functions Erf  
See also: IncompleteGamma, ErfApprox  
Erf 

The function Erf returns the error function (which is a special case of the incomplete gamma function). The error function is defined as follows:
Typical application of the error function: when the results of a series of measurements are described by a normal distribution with a standard deviation sigma and an expected value of zero, then erf (a*sqrt(2)/2/sigma)) returns the probability that the error of a single measurement lies between a and +a.
