[R] What are the red line and cut line in lm's Residuals vs Fitted plot?

S Ellison S.Ellison at LGCGroup.com
Mon Sep 19 15:43:47 CEST 2016

> Do you mean that the red line is a regression line?
> Why is the regression (line) weighted?
I suggest you look up 'locally weighted regression' to find out why that is useful and what it is for.

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