# Error function

Revision as of 11:00, 29 December 2008 by imported>Richard Pinch (subpages)

In mathematics, the **error function** is a function associated with the cumulative distribution function of the normal distribution.

The definition is

The **complementary error function** is defined as

The probability that a normally distributed random variable *X* with mean μ and variance σ^{2} exceeds *x* is