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Worldatwork C3E Exam - Topic 2 Question 37 Discussion

According to the 2-sigma rule, which of the following is true?
C) At least 75 percent of the data points will fall within two standard deviations of the mean.
A) Ninety-five percent of the data points will fall within two standard deviations of the mean.
B) Only 75% of the data points will fall within two standard deviations
D) The 2-sigma rule only applies to nominal level data

Worldatwork C3E Exam - Topic 2 Question 37 Discussion

Actual exam question for Worldatwork's C3E exam
Question #: 37
Topic #: 2
[All C3E Questions]

According to the 2-sigma rule, which of the following is true?

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Suggested Answer: C

by Susy at Aug 19, 2026, 04:19 AM

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Gladis
2 days ago
Wait, only 75%? That sounds off.
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Dulce
7 days ago
Totally agree, that's basic stats!
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Jani
12 days ago
A) is correct, 95% within 2 standard deviations!
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Ling
18 days ago
I definitely recall that A is the right answer since it aligns with the normal distribution properties we studied.
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Brendan
23 days ago
I feel like I might be mixing up the percentages; I thought it was 75% for two standard deviations, but now I'm confused.
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Ashlyn
28 days ago
I remember practicing a question like this, and I think A is correct because of the empirical rule.
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Rodrigo
1 month ago
I think the 2-sigma rule is about how data is distributed, but I'm not sure if it's 95% or something else.
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