I don't know about you, but I'm still trying to figure out how to use the REG procedure without accidentally creating a multicollinearity problem. Maybe I should just stick to simple linear regression and call it a day.
Ah, the age-old question of which SAS program to use for backward elimination. I guess we're all just hoping the exam doesn't throw us a curveball and make us do it manually with a calculator and a crystal ball.
Option C is the one I'm leaning towards. It's straightforward and seems to cover the backward elimination selection criterion. Plus, the image looks like it's supporting this option.
Option D seems to have all the right elements, but I'm worried it might be too complicated. I guess the exam is testing our understanding of the REG procedure, so I'll go with that one.
Option B looks good, but I'm not sure if it includes the backward elimination selection criterion. I'll have to double-check the SAS documentation to be sure.
Delbert
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