Calculates the residual variance for objects of class nls, lm, glm, drc or any other models from which coef and residuals can be extracted.
Usage
resVar(object)
Arguments
object
a fitted model.
Value
The residual variance of the fit.
Details
$$resVar = \frac{\sum_{i=1}^n(y_i - \hat{y}_i)^2}{n - p}$$
where \(n\) is the number of response values and \(p\) the number of parameters in the model.