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When a Belt is analyzing sample data she should keep in mind that 95% of Normally Distributed data is within +/- 2 Standard Deviations from the Mean.
Suggested Answer: A
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30 comments · newest first
BE
Bernadine
6 months ago
But the question specifies Normally Distributed data. True is the right choice!
VI
Vi
6 months ago
I’m not so sure. What if the data isn’t normal?
NA
Nana
7 months ago
Agreed! 95% within +/- 2 SD is standard.
SH
Sharan
7 months ago
Nope, it's actually true. Standard stuff in stats!
CL
Claribel
7 months ago
Totally agree, classic normal distribution rule.
LE
Letha
8 months ago
That's true, 95% within 2 SDs!
DA
Daren
8 months ago
Haha, this question is making my head spin. I'll just guess and hope for the best.
CA
Caitlin
8 months ago
B) False, because 95% is way too low for normal distribution. It's gotta be higher than that.
SH
Shad
8 months ago
Wait, is this a trick question? I'm going to go with my gut and say A) True.
JA
Janna
8 months ago
Hmm, I thought it was +/- 3 standard deviations. Time to brush up on my statistics!
GE
German
9 months ago
A) True, that's the standard for normal distribution.
RE
Renato
9 months ago
B) False, it's actually +/- 3 standard deviations.
CA
Carey
9 months ago
True, that's the 68-95-99.7 rule for normal distribution.
AL
Alison
9 months ago
I remember the 95% part, but I’m not confident about the +/- 2 standard deviations.
CH
Chara
9 months ago
I’m leaning towards true, but I could be mixing it up with the empirical rule.
BA
Barrett
9 months ago
I’m not entirely sure, but I feel like we practiced a question like this in class. It might be true.
SH
Sherrell
10 months ago
I think it's true. It’s a basic concept in statistics.
LE
Lemuel
10 months ago
I thought it was just 90%. Are you sure?
MA
Marti
10 months ago
Wait, is it really 95%? Sounds high!
HU
Huey
11 months ago
I think this is true, but I remember something about 68% being within 1 standard deviation too.
ZO
Zona
11 months ago
Easy peasy! This is a classic normal distribution fact. The answer is definitely True.
CH
Chery
11 months ago
I'm not totally sure about this one. I'll have to think it through step-by-step to make sure I understand it correctly before answering.
CA
Caprice
11 months ago
Okay, I've got this. The key is knowing that 95% of normally distributed data falls within 2 standard deviations of the mean. So the answer must be True.
TO
Tommy
11 months ago
Wait, I'm a bit confused. Is this asking about the percentage or the standard deviations? I need to re-read the question carefully.
RE
Refugia
12 months ago
Hmm, this seems like a straightforward stats question. I'll remember the 95% rule for normal distributions and apply that here.
TE
Terrilyn
6 months ago
Right? It’s all about understanding the distribution.
RI
Richelle
6 months ago
Can’t believe some might say B) False!
SE
Sena
6 months ago
Agreed! It’s a fundamental concept.
BR
Brock
10 months ago
Definitely! The 95% rule is key in stats.
GE
Gennie
10 months ago
I think the answer is A) True.