robustbase (version 0.90-2)

sigma: Extract Residual Standard Error 'Sigma'

Description

Extract the residual standard error from a fitted model.

Usage

sigma(object, ...)

Arguments

object

a fitted model.

...

additional, optional arguments. (None are used in our methods)

Value

• the residual standard error as a scalar

Details

This is a (S3) generic function (as e.g., in package lme4). Currently, we provide methods for lmrob, nlrob, and nls.

The lme4 package provides methods for its own models.