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# scikits.statsmodels.robust.norms.TrimmedMean

class `scikits.statsmodels.robust.norms.``TrimmedMean`(c=2.0)

  Trimmed mean function for M-estimation.

  Parameters: | c : float, optional The tuning constant for Ramsay’s Ea function. The default value is 2.0.

  See also

  `scikits.statsmodels.robust.norms.RobustNorm`

  Methods

  `psi`(z) | The psi function for least trimmed mean
  `psi_deriv`(z) | Abstract method:
  `psi_derive`(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

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