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# scikits.statsmodels.robust.norms.LeastSquares

class `scikits.statsmodels.robust.norms.``LeastSquares`

  Least squares rho for M-estimation and its derived functions.

  See also

  `scikits.statsmodels.robust.norms.RobustNorm`

  Methods

  `psi`(z) | The psi function for the least squares estimator
  `psi_deriv`(z) | The derivative of the least squares psi function.
  `rho`(z) | The least squares estimator rho function
  `weights`(z) | The least squares estimator weighting function for the IRLS algorithm.

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