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SAS A00-240 Exam - Topic 9 Question 10 Discussion

A non-contributing predictor variable (Pr > |t| = 0.658) is removed from an existing multiple linear regression model.What will be the result?
B) A decrease in R-Square
A) An increase in R-Square
C) A decrease in Mean Square Error
D) No change in R-Square

SAS A00-240 Exam - Topic 9 Question 10 Discussion

Actual exam question for SAS's A00-240 exam
Question #: 10
Topic #: 9
[All A00-240 Questions]

A non-contributing predictor variable (Pr > |t| = 0.658) is removed from an existing multiple linear regression model.

What will be the result?

Show Suggested Answer Hide Answer
Suggested Answer: B

by Teddy at May 08, 2022, 08:48 PM

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Janessa
10 months ago
I’m not convinced, seems like it could impact the results.
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Tijuana
10 months ago
Nope, no change in R-Square. That's how it works!
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Krissy
11 months ago
Wait, really? I thought it might affect the model somehow.
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Vi
11 months ago
Totally agree, it should stay the same!
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Silvana
11 months ago
Removing a non-contributing predictor won't change R-Square.
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Willard
11 months ago
If I recall correctly, non-contributing predictors don't add value, so I lean towards no change in R-Square, but I could be wrong.
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Cathern
11 months ago
I'm a bit confused; does removing a variable always lead to a decrease in Mean Square Error? I feel like it might depend on the context.
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Ashleigh
11 months ago
I think I practiced a question like this, and it mentioned that R-Square can only increase or stay the same when removing variables.
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Jesusa
11 months ago
I remember that removing a non-contributing variable shouldn't affect the R-Square much, but I'm not entirely sure.
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Van
11 months ago
The competing strategy makes the most sense to me based on the details provided. Someone who is assertive and uncooperative is clearly trying to win the conflict rather than collaborate or accommodate the other person. I feel good about selecting that option.
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Thea
12 months ago
Okay, let me see here. The question is asking for a command to show the current status of all Oracle VM Agent components. Based on that, I think option C, "service ovs-agent status", is the best choice.
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