23.5 Selection of the Best Equation: Best Subsets
Stat > Regression > Best Subsets
It generates all possible equations, together with some goodness of fit measures for each one of them. This allows us to select and thoroughly study (based for instance on significance of coefficients, residual analysis) those that seem to be more appropriate.
In the following, the square of the variable Power, named Pow2, is entered as a new explanatory variable.
The list that appears, with all default options (the best two equations with one to four explanatory variables), is: