PRC-2 · Chapter 11 · Question 58 of 60
According to the properties of a Normal Distribution, approximately what percentage of data falls within ±2 standard deviations of the mean?
Test yourself: pick an answer
Reveal answer & explanation
Correct answer: C) 95.4%
Explanation
The Empirical Rule states that roughly 95.4% of the area under the normal curve lies within two standard deviations of the arithmetic mean.
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