Residual degrees of freedom of a linear_regression model

Weighted models: sum(w) - rank (SPSS frequency weights, non-integer); unweighted: the lm value.

Usage

# S3 method for class 'linear_regression'
df.residual(object, ...)

Arguments

object

A linear_regression result (ungrouped, listwise).

...

Not used.

Value

A single number.