scipy.special.chndtr#
- scipy.special.chndtr(x, df, nc, out=None) = <ufunc 'chndtr'>#
Non-central chi square cumulative distribution function
The cumulative distribution function is given by:
where is the degrees of freedom (
df
) and is the non-centrality parameter (nc
).- Parameters:
- xarray_like
Upper bound of the integral; must satisfy
x >= 0
- dfarray_like
Degrees of freedom; must satisfy
df > 0
- ncarray_like
Non-centrality parameter; must satisfy
nc >= 0
- outndarray, optional
Optional output array for the function results
- Returns:
- xscalar or ndarray
Value of the non-central chi square cumulative distribution function.