TrimmedMean.rho()

statsmodels.robust.norms.TrimmedMean.rho

TrimmedMean.rho(z) [source]

The robust criterion function for least trimmed mean.

Parameters:

Parameters:	z : array-like 1d array
Returns:	rho : array rho(z) = (1/2.)z*2 for \|z\| <= c rho(z) = 0 for \|z\| > c

z : array-like

1d array

Returns:

rho : array

rho(z) = (1/2.)*z**2 for |z| <= c

rho(z) = 0 for |z| > c