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bcongelio / nfl-analytics-with-r-book

The repo for Introduction to NFL Analytics with R (published with CRC Press)
https://bradcongelio.com/nfl-analytics-with-r-book/
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Removing reference to "line of best fit" in initial rushing yards over expected model #8

Closed bcongelio closed 10 months ago

bcongelio commented 11 months ago

As outlined by NeuroNisl in the Discord:

The graph shows the “line of best fit” between Actual Rushing Yards and Expected Rushing Yards. Those running backs that outperformed the model’s expectations (that is, more actual rushing yards than expected rushing yards) fall below the line, while those that underperformed the model are above the line of best fit.

Wouldn't this only be true if you plotted the linear function y=x instead of the linear regression result which doesn't necessarily need to be this function?

He is correct. It is not a correlation (such in the linear regression chapter) and this needs a slight edit to remove the terminology.

bcongelio commented 10 months ago

Completed in the book's page proofs.