The summary is returned in a list of class summary.lmRob and contains the following components:
sigmaa single numeric value containing the residual scale estimate.
dfa numeric vector of length 3 containing integer values: the rank of the model matrix, the residual degrees of freedom, and the number of coefficients in the model.
cov.unscaledthe unscaled covariance matrix; i.e, the matrix that, when multiplied by the estimate of the error variance, yields the estimated covariance matrix for the coefficients.
correlationthe correlation coefficient matrix for the coefficients in the model.
...the remaining components are the same as the corresponding components in an lmRob
object. Use the names
function to obtain a list of the components.