S3 method to extract the residual standard deviation

Functions for S3 method defined in breathtestcore for CmdStanFit.

# S3 method for class 'breathteststanfit'
sigma(object, ...)

Arguments

object

A Stan-based fit returning an S6 method

...

Not used

Value

A numeric value giving the sigma (= average residual standard deviation) term from the Stan fit.