How do I interpret the fit statistics of proc LOESS to know if the form is a good fit? I ran PROC LOESS to explain price sensitivity (which appeared to me to be nonlinear, and not explained well with a curve). When I plot predicted values along with the actual behavior, the LOESS clearly explains it nicely, but, given the limited fit output (residual sum of squares, etc...) how can I assess the output? Thanks!
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