statsmodels.robust.norms.MQuantileNorm.psi#
- MQuantileNorm.psi(z)[source]#
The psi function for MQuantileNorm estimator
The analytic derivative of rho
- Parameters:
- zarray_like
1d array
- Returns:
- psi
ndarray The value of the psi function.
- psi
The psi function for MQuantileNorm estimator
The analytic derivative of rho
1d array
ndarrayThe value of the psi function.