why not chosing always a spline?

by Ben   Last Updated November 02, 2018 10:19 AM

I'm having a quite simple question: Why is a spline fit not the best choice everytime? In other words: How do I separate a spline fit from a kernel smoother or a polynomial in a meaningful way? I'm aware of the differences and I can imagine proper applications but imagine a case where you can use each of them. Like, for example, a quadratic curve with "some" noise.

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