sigma: Extract Residual Standard Deviation 'Sigma'
Extract the estimated standard deviation of the errors, the
“residual standard deviation” (also misnamed the
“residual standard error”), from a fitted model.
# S3 method for merMod
a fitted model.
additional, optional arguments, passed from or to
methods. (None currently in our two methods.)
Typically a number, the estimated standard deviation of the
errors (“residual standard deviation”) for Gaussian
models, and - less interpretably - the square root of the residual
deviance per degree of freedom in more general models.
Package lme4 provides methods for mixed-effects models of class
'>merMod and lists of linear models, '>lmList4.