Knotted Spline Effect

Effects to be entered: X&Knotted

1. In the Select Columns list, select a continuous effect, X.

2. Click Add.

3. Select X in the Construct Model Effects list.

4. Select Attributes > Knotted Spline Effect.

5. In the menu that appears, specify the number of knots or accept the default number.

6. Click OK.

Figure 2.22 shows the Regression Plot for a model fit to the data in the XYZ Stock Averages (plots).jmp sample data table. Here Date is assigned the Knotted Spline Effect and five knots are specified. DJI Close is the response.

Figure 2.22 Model Fit for a Knotted Spline with Five Knots 

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