I have two regressions to perform - one with a metric DV (-3 to 3), the
other with an ordered DV (0,1,2,3).

Neither normal distribution not homoscedasticity is given. I have a two
questions:

(1) Some sources say robust regression take care of both lack of normal
distribution and heteroscedasticity, while others say only of normal
distribution. What is true?
(2) Are there ways of using robust regressions with ordered data, or is
that only possible for metric DVs?

Thanks
Torvon

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