Enter the number of best linear unbiased predictors (BLUPs) to use for prediction.
The default value of 0 indicates that all specified predictors are to be used for fitting the model.
When you specify a positive value, the predictors with the largest BLUPs in absolute value from a full model fit are selected and then the model is refit using only those predictors. This number is in addition to any lock-in variables that you specify.
Tip: To change the scale of the slider, right-click on the slider and select from the pop-up menu. Change the upper and/or lower boundaries in the window that appears, to rescale the slider and click .