How To Find A Cubic Polynomial That Models The Data. To find equations for given cubic graphs. The data suggest a cubic model.
The polynomial models can be used to approximate a complex nonlinear relationship. Overfitting in the graph below, we compare a polynomial regression of degree 2 (blue line) with one of degree 5 (orange line) on a random subset (n = 30) of the ozone ~ wind data. What type of polynomial function could we use to model the data?
