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¥ The Stepwise Regression Plot
¥ The Stepwise Regression Diagnostics Table
¥ The Stepwise History.
All three windows have hot regions. When your mouse is above one of these regions, the pointer changes from an arrow to a circle. Mousing down at this point initiates some activity in the interface.
To understand how to use a given window choose an option below.
History .
Statistically significant terms are solid lines. Dotted lines show that the fitted coefficient is not significantly different from zero.
Clicking on a line in this plot toggles its state. That is, a term in the model (green line) gets removed (turns red), and terms out of the model (red line) enter the model (turn green).
The coefficient for a term out of the model is the coefficient resulting from adding that term to the current model.
Clicking on a row in this table toggles the state of the corresponding term. That is, a term in the model (green row) gets removed (turns red), and terms out of the model (red rows) enter the model (turn green).
The coefficient for a term out of the model is the coefficient resulting from adding that term to the current model.
¥ RMSE - the root mean squared error of the current model.
¥ R-square - the amount of response variability explained by the model.
¥ F - the overall F statistic for the regression.
¥ P - the associated significance probability.