scipy.special.fdtridfd#
- scipy.special.fdtridfd(dfn, p, x, out=None) = <ufunc 'fdtridfd'>#
- Inverse to - fdtrvs dfd- Finds the F density argument dfd such that - fdtr(dfn, dfd, x) == p.- Parameters:
- dfnarray_like
- First parameter (positive float). 
- parray_like
- Cumulative probability, in [0, 1]. 
- xarray_like
- Argument (nonnegative float). 
- outndarray, optional
- Optional output array for the function values 
 
- Returns:
- dfdscalar or ndarray
- dfd such that - fdtr(dfn, dfd, x) == p.
 
 - See also - fdtr
- F distribution cumulative distribution function 
- fdtrc
- F distribution survival function 
- fdtri
- F distribution quantile function 
- scipy.stats.f
- F distribution 
 - Examples - Compute the F distribution cumulative distribution function for one parameter set. - >>> from scipy.special import fdtridfd, fdtr >>> dfn, dfd, x = 10, 5, 2 >>> cdf_value = fdtr(dfn, dfd, x) >>> cdf_value 0.7700248806501017 - Verify that - fdtridfdrecovers the original value for dfd:- >>> fdtridfd(dfn, cdf_value, x) 5.0