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
- psi
Last update:
Nov 14, 2024