Hi all,

I am reading the MASS book but it doesn't give examples about the diagnosis
and model checking for rlm...

My data is highly non-Gaussian so I am using rlm instead of lm.

My questions are:

0. Are goodness-of-fit and model-checking using rlm completely the same as
usual regression?

   1.

   Please give me some pointers about how to do goodness-of-fit and
   residual diagnosis for rlm in R? Any good tutorials/examples, etc?
   2.

   How to do the residual diagnosis etc. when regression weights are used?
   Still the same?

Thanks a lot!

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