Re:Why I’m Not a Fan of R-Squared
by achompas on Sunday July 24, 2016 @10:31AM
(#12153406)
And you're claiming it's weird because people learn this early on? Maybe that's where we disagree -- it's not as common to learn about the issues with R^2 as you might think.
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Maybe the fact that this is in the (reasonably brief) Wikipedia entry on R2 is some evidence?
https://en.wikipedia.org/wiki/Coefficient_of_determination#I...
Also, I find that the OP is actually more confusing on this topic than Wikipedia.
Not sure how else I can support that this is a basic fact about this metric. I'm not in the mood to find quotes in intro textbooks, etc.