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SAS A00-240 Exam - Topic 8 Question 66 Discussion

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?
A) lsmeans Income / pdiff=control adjust=dunnett;
B) lsmeans Income / pdiff=control adjust=t;
C) lsmeans Income / pdiff=all adjust=tukey;
D) lsmeans Income / pdiff=all adjust=t;

SAS A00-240 Exam - Topic 8 Question 66 Discussion

Actual exam question for SAS's A00-240 exam
Question #: 66
Topic #: 8
[All A00-240 Questions]

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?

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Suggested Answer: A

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

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Clay
10 months ago
Wait, can you really control for experimentwise error with that?
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Cristina
10 months ago
I thought Dunnett was for specific comparisons only?
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Lucy
11 months ago
Definitely going with C, it covers all comparisons.
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Gracia
11 months ago
I’m not sure about that, isn’t Tukey more conservative?
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Willis
11 months ago
Option C is the best choice for comparing all incomes!
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Dana
11 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
11 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
11 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
11 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
11 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
11 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
12 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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