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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?
Suggested Answer: B
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29 comments · newest first
LI
Lisbeth
11 months ago
Model B is pretty close, though.
IR
Ira
11 months ago
Not sure about that, AIC isn't everything!
ED
Edna
11 months ago
Wait, isn't RestPulse (Model C) a strong contender too?
CA
Cammy
12 months ago
Totally agree, A is the best choice!
LO
Loreta
12 months ago
Model A has the lowest AIC value.
AB
Abraham
1 year ago
I remember that Age Weight RunTime RunPulse MaxPulse model had a lot of variables, but I’m not sure if that makes it better or worse for AIC.
VA
Valentine
1 year ago
I feel like the champion model might be the one with just RestPulse, but I’m not confident. It seems too simple compared to the others.
DO
Doug
1 year ago
I think we practiced a similar question where we had to choose the best model based on AIC. If I recall correctly, the model with the fewest predictors and lowest AIC is usually preferred.
BE
Beula
1 year ago
I remember we discussed how AIC helps in model selection, but I'm not entirely sure which model has the lowest AIC here.
TI
Tien
1 year ago
This seems straightforward enough. I just need to identify the model with the lowest AIC value from the options provided.
AH
Ahmed
1 year ago
I'm a bit confused by the different variable combinations in the models. I'll need to review the question carefully to make sure I understand what's being asked.
RO
Roslyn
1 year ago
The AIC statistic is what we're looking for to identify the champion model. I'll go through each option and compare the AIC values.
DU
Dustin
1 year ago
Okay, I see the RSQUARE selection method output. Now I just need to find the model with the lowest AIC value.
RE
Reita
1 year ago
Hmm, this looks like a tricky one. I'll need to carefully analyze the AIC values for each model to determine the champion.
NG
Ngoc
1 year ago
I'm gonna have to go with C on this one. The AIC is all about finding the Goldilocks model - not too complex, not too simple, but just right. And RestPulse seems to be that sweet spot. Though I do wonder if the 'RestPulse' variable is actually a secret agent in disguise.
LI
Lillian
1 year ago
Okay, let's think this through. The AIC statistic rewards models that fit the data well while also being as simple as possible. Looking at the options, the model with just 'RestPulse' has the lowest AIC, so that must be the champion. I'm picking C.
MA
Marquetta
1 year ago
This is a tough one, but I think the answer is C. The AIC statistic is all about finding the most parsimonious model, and the one with just 'RestPulse' looks like the clear winner here. I'm feeling pretty confident about this one!
LE
Leanora
1 year ago
I'm not sure, but I think the answer is D. RunTime might be a significant predictor in this case.
GA
Gail
1 year ago
I agree with you, I also think the answer is C. A simpler model is usually preferred with AIC.
KA
Katlyn
1 year ago
I believe the answer is B. Including both RestPulse and MaxPulse could provide a better fit.
MY
Myra
1 year ago
I think the answer is A. It includes more variables which might improve the model's accuracy.
AD
Adolph
1 year ago
Hmm, the question is asking for the champion model based on the AIC statistic. If I'm reading this correctly, the model with 'RestPulse' has the lowest AIC, so that must be the winner. I'm going with C.
BR
Brice
1 year ago
Okay, let's see. The AIC statistic is used to evaluate model fit, and the lower the AIC, the better the model. Looking at the results, the model with the lowest AIC is RestPulse, so I'm going with C.
LA
Lauran
1 year ago
RestPulse seems to be the winner based on the AIC statistic.
TW
Twana
1 year ago
I agree, RestPulse has the lowest AIC which indicates a better model fit.
ER
Erin
1 year ago
I think the champion model is RestPulse because it has the lowest AIC.
BR
Brittni
2 years ago
I think the champion model is D) RunTime because it has the lowest AIC statistic.
RE
Rex
2 years ago
I disagree, I believe the champion model is A) Age Weight RunTime RunPulse MaxPulse.
NA
Nana
2 years ago
I think the champion model is B) Age Weight RunTime RunPulse RestPulse MaxPulse.