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Exam A00-240 topic 1 question 47 discussion

Actual exam question from SAS Institute's A00-240
Question #: 47
Topic #: 1
[All A00-240 Questions]

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?

  • A. Age Weight RunTime RunPulse MaxPulse
  • B. Age Weight RunTime RunPulse RestPulse MaxPulse
  • C. RestPulse
  • D. RunTime
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Suggested Answer: A 🗳️
by PerkDizzzle at Oct. 25, 2020, 2:17 a.m.

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Kristyt
4 years ago
The question states based on the AIC - option A has the lowest AIC
upvoted 2 times
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rh_214
4 years, 3 months ago
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.
upvoted 1 times
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Krishna1985
4 years, 5 months ago
Option A has the Highest Adj RSq and the Lowest AIC. I think you are confused.
upvoted 1 times
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PerkDizzzle
4 years, 5 months ago
B is lower by .2 unless I'm missing something :-)
upvoted 1 times
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Dkonat
4 years, 5 months ago
But AIC is lower for A (Age Weight RunTime RunPulse MaxPulse)
upvoted 2 times
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PerkDizzzle
4 years, 5 months ago
The lower the AIC the better, this should be B
upvoted 1 times
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