The Model Setup dialog is the primary control center for building your MARS models, with the most commonly used model set-up and refinement options conveniently located in the five tabbed dialogs.
A MARS Model can be constructed with as little as two actions: selecting the target variable (MV, median housing values) and the set of predictors (all remaining variables in this example).
That's it! Click on "Best Model" to estimate the MARS model.
Using intelligent default settings and a fast intensive search procedure, MARS selects which variables to use and automatically transforms and combines them into the best fitting model.