Please let me know the answer

[Amey12]

This question relates to a SAS Proc GLM analysis of data from a cross-sectional survey looking at the relationship between Y and D (which are quantitative variables). The table below summarises a sequence of fitted models with Y = dependent variable.

Which type of curvature improves the fit of the model the most?

D × ln(D)

sqrt(D)

ln(D)

D × D

[PaigeMiller]

After looking at all of the questions you have posted here,  and because I (and most of us here in the SAS Communities) will not do your homework for you, I have two suggestions:

1. Go through your class notes to see if you can find an answer

2. Sit down with your professor and have him/her explain it