IASSC ICBB Exam - Topic 9 Question 83 Discussion

Actual exam question for IASSC's ICBB exam

Question #: 83
Topic #: 9

[All ICBB Questions]

A fundamental rule is that both Standard Deviation and Variance can be added.

ATrue

BFalse

Show Suggested Answer

Suggested Answer: D

by Samira at Dec 10, 2024, 11:52 PM

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Hassie

8 months ago

True, they can't be added directly.

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Florinda

8 months ago

Yep, variance is the square of standard deviation, so no adding!

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Mignon

8 months ago

Wait, are you sure about that? Seems odd to me.

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Cordelia

9 months ago

Totally agree, variance and standard deviation are different.

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Iluminada

9 months ago

That's actually false! You can't just add them.

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Lashaun

9 months ago

I thought we learned that you can only add variances, not standard deviations, but I might be mixing it up with another topic.

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Berry

9 months ago

I vaguely recall something about how variances can be added when dealing with independent variables, but I'm confused about standard deviations.

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Jestine

9 months ago

I'm not entirely sure, but I feel like we practiced a question where we had to combine variances, and it was different from standard deviations.

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Portia

10 months ago

I think I remember that you can't just add standard deviations or variances directly. It seems like there's a specific rule about that.

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Merissa

10 months ago

This seems straightforward - standard deviation and variance are not the same thing, so they can't be added. I'll go with B.

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Larae

10 months ago

Okay, I think I've got this. Standard deviation and variance measure different things, so they can't be added directly. I'll select B for this one.

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Jill

10 months ago

Hmm, I'm a bit confused on this one. I know standard deviation and variance are related, but I'm not sure if they can be added directly.

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Avery

10 months ago

I'm pretty sure this is false, but I'll need to think through the properties of standard deviation and variance to be sure.

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Elsa

1 year ago

Wait, is this a joke? Of course standard deviation and variance can't be added. That would make no statistical sense whatsoever.

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Lovetta

1 year ago

Nope, nope, nope. Definitely false. This is basic statistics knowledge. What kind of exam is this, anyway?

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Deandrea

1 year ago

False, for sure. Basic stats stuff.

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Luisa

1 year ago

Yeah, you're right. It's false.

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Cherelle

1 year ago

I agree, it's definitely false.

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Jaleesa

1 year ago

False

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Bok

1 year ago

Haha, good one! Next they'll tell us we can add apples and oranges. Standard deviation and variance are completely different things.

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Sommer

1 year ago

Haha, good one! Next they'll tell us we can add apples and oranges. Standard deviation and variance are completely different things.

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Rebbecca

1 year ago

B) False

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Abraham

1 year ago

A) True

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Casey

1 year ago

Hmm, I've never heard that rule before. Isn't variance the square of the standard deviation? This feels like a trick question.

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Francine

1 year ago

B) False

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Chuck

1 year ago

It's true, they can both be added together.

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Leoma

1 year ago

A) True

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Maia

1 year ago

I'm pretty sure that's not true. Standard deviation and variance are different statistical measures, so they can't be added directly.

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Fletcher

1 year ago

I think it's true because both Standard Deviation and Variance are measures of dispersion and can be added together.

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Mari

1 year ago

B) False

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Fletcher

1 year ago

A) True

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