Spline smoothing plot
Learn me by follow me exercises
applies generalized additive model (GAM) to test the non-
To change the degree of freedom of the smoother, right click the risk factor (X) and then click “Change degree of freedom” from popup menu. The default (set df=0) uses minimizing GCV method to determine degree of freedom.
Check “Scatter plot original points” if you want scatter plot with a smoothing line.
A screen shot of sample design:
Sample output graphs: