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Why is the error function defined as it is?

Definition and Usage The math.erf () method returns the error function of a number. This method accepts a value between - inf and + inf, and returns a value between - 1 to + 1. Syntax math.erf (

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x^{2}}\operatorname {erfcx} x,\end{aligned}}}

Definition. The error function erf (X) is twice the integral of the Gaussian distribution with 0 mean and variance of . The complementary error function erfc (X) is defined as. The scaled

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Error Function Calculator

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Error Function: Simple Definition, Table of Values

Short answer IIRC: erf(x) is defined for some random variable that is normally distributed with mean 0 and variance 1/2. The variance is the square of the standard deviation.

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