scipy.special.chdtriv#
- scipy.special.chdtriv(p, x, out=None) = <ufunc 'chdtriv'>#
- Inverse to - chdtrwith respect to v.- Returns v such that - chdtr(v, x) == p.- Parameters:
- parray_like
- Probability that the Chi square random variable is less than or equal to x. 
- xarray_like
- Nonnegative input. 
- outndarray, optional
- Optional output array for the function results. 
 
- Returns:
- scalar or ndarray
- Degrees of freedom. 
 
 - References [1]- Chi-Square distribution, https://www.itl.nist.gov/div898/handbook/eda/section3/eda3666.htm - Examples - >>> import scipy.special as sc - It inverts - chdtr.- >>> p, x = 0.5, 1 >>> sc.chdtr(sc.chdtriv(p, x), x) 0.5000000000202172 >>> v = 1 >>> sc.chdtriv(sc.chdtr(v, x), v) 1.0000000000000013