scipy.special.ndtr¶

scipy.special.ndtr(x) = <ufunc 'ndtr'>¶

Gaussian cumulative distribution function.

Returns the area under the standard Gaussian probability density function, integrated from minus infinity to x

\[\frac{1}{\sqrt{2\pi}} \int_{-\infty}^x \exp(-t^2/2) dt\]

Parameters:	x : array_like, real or complex Argument
Returns:	ndarray The value of the normal CDF evaluated at x