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

See also

erf, erfc, scipy.stats.norm, log_ndtr