Number of Predictors Included in Model Use the field/slider to specify the number of predictors to be included in the model . To Specify the Number of Predictors Included in the Model: Select Score as the Variable Selection Method . Either type the desired number of predictors in the text field or move the slider to the right or to the left to specify a value. Tip : To change the scale of the slider, right-click on the slider and select Rescale Slider from the pop-up menu. Change the upper and/or lower boundaries in the window that appears, to rescale the slider and click OK .