Fitting Data to Arbitrary Line (Regression but different)
I'm trying to describe the variability of the blue dots from the reds line
(always set at 1). What's the best way to do this? This is kind of like
Regression but I'm fixing the red line in place. Regular regression would
change the slope and position of the red line and I don't want that.
What's the easiest way to do this in R?