Exam A00-240 All QuestionsBrowse all questions from this exam
Go to Exam
Question 8

Refer to the exhibit:

SAS output from the RSQUARE selection method, within the REG procedure, is shown. The top two models in each subset are given.

Based on the AIC statistic, which model is the champion model?

    Correct Answer: A

    The correct model based on the AIC statistic is the one with the lowest AIC value. From the exhibit, Model 2 with the variables Age, Weight, RunTime, RunPulse, and MaxPulse has the lowest AIC value of 56.2968. This indicates that this model is the champion model according to the AIC criterion.

Discussion
KristytOption: A

The question states based on the AIC - option A has the lowest AIC

DkonatOption: A

But AIC is lower for A (Age Weight RunTime RunPulse MaxPulse)

rh_214Option: A

A is correct. Although, B's AIC is slightly lower- you have to also consider the Adj R2 and the R2 value- R2 is closer to the Adj R2 and the adj R2 is lower. That extra variable in B can be slight overfitting of the model.

Krishna1985Option: A

Option A has the Highest Adj RSq and the Lowest AIC. I think you are confused.

PerkDizzzleOption: B

B is lower by .2 unless I'm missing something :-)

PerkDizzzleOption: B

The lower the AIC the better, this should be B