SAS A00-240 Exam - Topic 8 Question 66 Discussion

Actual exam question for SAS's A00-240 exam

Question #: 66
Topic #: 8

After performing an ANOVA test, an analyst has determined that a significant effect exists due to income. The analyst wants to compare each Income to all others and wants to control for experimentwise error.

Which GLM procedure statement would provide the most appropriate output?

Alsmeans Income / pdiff=control adjust=dunnett;

Blsmeans Income / pdiff=control adjust=t;

Clsmeans Income / pdiff=all adjust=tukey;

Dlsmeans Income / pdiff=all adjust=t;

Show Suggested Answer

Suggested Answer: A

by Shawna at Feb 28, 2023, 03:23 PM

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Clay

4 months ago

Wait, can you really control for experimentwise error with that?

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Cristina

4 months ago

I thought Dunnett was for specific comparisons only?

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Lucy

4 months ago

Definitely going with C, it covers all comparisons.

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Gracia

4 months ago

I’m not sure about that, isn’t Tukey more conservative?

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Willis

5 months ago

Option C is the best choice for comparing all incomes!

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Dana

5 months ago

I feel like I might be mixing up the adjustments, but I think the one with "pdiff=all" is what we need for comparing every income level.

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Jarvis

5 months ago

I practiced a similar question where we had to choose between Tukey and Dunnett, and I think Tukey is the right choice for comparing all groups.

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Nana

5 months ago

I'm not entirely sure, but I think Dunnett's adjustment is more for comparing a treatment group to a control, not all groups.

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Magda

5 months ago

I remember that controlling for experimentwise error is really important, so I think we might need to use Tukey's adjustment for multiple comparisons.

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Sabrina

5 months ago

Hmm, the wording about the "External Account hierarchy" is throwing me off a bit. I'll need to re-read that part carefully.

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Samira

5 months ago

Hmm, I'm a bit confused here. If the organization-wide defaults are set to private, wouldn't that already prevent the manager from accessing the records? I'm not sure if removing access on the profile is necessary.

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Paola

5 months ago

Hmm, I'm a bit confused about the units here. Is 1U the same as 44.45mm? I'll need to double-check that.

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