Last updated 16-Nov-95 [http://www.stat.uchicago.edu/~thisted/courses/227/sel412.html]
There is an error in Selvin's formal statistical test for the change in
due to the addition of q additional predictors to a regression
model. The F statistic in (4.12) should read
The denominator is in error in the book. This ratio assesses the increase
in relative to the proportion of unexplained variation
remaining in the full model.