As of Version 7.0, has become a property of LinearModelFit.
- To use , you first need to load the Regression Common Functions Package. You can do this by using , which will automatically load the Regression Common Functions Package, or you can load the package directly by using .
- is useful for trimming a large set of predictors.
- Basis functions yielding a small value for the partial sum of squares have less influence on the fit.