This function computes the robust Final Prediction Errors (RFPE) for a robust regression fit using M-estimates.
It is used internally by step.lmrobdetMM
and not meant to be used
directly.
lmrobdetMM.RFPE(object, scale = NULL)
the MM
element (of class lmrob
) in an object of class lmrobdetMM
.
a numeric value specifying the scale estimate used to compute the RFPE. Usually this
should be the scale estimate from an encompassing model. If NULL
, the scale estimate in
object
is used.
the robust final prediction error (numeric).