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IASSC ICBB Exam - Topic 4 Question 93 Discussion

Actual exam question for IASSC's ICBB exam
Question #: 93
Topic #: 4
[All ICBB Questions]

A valid Multiple Linear Regression (MLR) is characterized by all of these except?

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Suggested Answer: D

by Micaela at Jul 08, 2025, 11:31 AM

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Brigette
2 months ago
I thought correlation between X's was okay sometimes, isn't that true?
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Argelia
3 months ago
Wait, are you saying we can't evaluate interactions in MLR? That seems off.
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Willow
3 months ago
I think D is the odd one out here.
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Tijuana
3 months ago
Totally agree, C is also a must-have for valid MLR.
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Josefa
3 months ago
The X's need to be independent, that's a key point!
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Frankie
4 months ago
I vaguely remember something about evaluating interactions in MLR, but I'm not confident if that's completely impossible or just more complex.
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Wilson
4 months ago
I feel like option D might be the odd one out since MLR can be applied to observational data too, not just experiments.
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Leah
4 months ago
I remember practicing a question where we discussed the normal distribution of residuals, but I can't recall if that's a strict requirement for MLR.
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Thersa
4 months ago
I think the assumption about the X's not being correlated is important, but I'm not sure if that's the same as saying they have to be independent.
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Polly
4 months ago
Interactions in MLR? That's an interesting one. I'll make sure to consider that in my answer.
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Hyman
5 months ago
Okay, I think the key here is to focus on the "except" part of the question. Gotta find the one assumption that doesn't hold true.
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Fannie
5 months ago
I'm a bit confused on the difference between correlated and independent variables in MLR. Gotta review that.
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Kathryn
5 months ago
I'm pretty confident I know the answer to this one. Let me double-check the options.
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Freeman
5 months ago
Hmm, this one seems tricky. I'll need to think carefully about the assumptions of MLR.
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