statsmodels.robust.norms.TrimmedMean¶
-
class
statsmodels.robust.norms.
TrimmedMean
(c=2.0)[source]¶ Trimmed mean function for M-estimation.
- Parameters
- c
float
,optional
The tuning constant for Ramsay’s Ea function. The default value is 2.0.
- c
See also
Methods
psi
(z)The psi function for least trimmed mean
psi_deriv
(z)The derivative of least trimmed mean psi function
rho
(z)The robust criterion function for least trimmed mean.
weights
(z)Least trimmed mean weighting function for the IRLS algorithm