In a normal distribution, what percentage of the data falls within 3 standard deviations of the mean?A.99.7%B.34%C.95%D.68%SUBMITarrow_backPREVIOUS
Question
In a normal distribution, what percentage of the data falls within 3 standard deviations of the mean?A.99.7%B.34%C.95%D.68%SUBMITarrow_backPREVIOUS
Solution
The answer is A. 99.7%. In a normal distribution, about 68% of the data falls within one standard deviation of the mean, about 95% falls within two standard deviations, and about 99.7% falls within three standard deviations. This is known as the empirical rule or the 68-95-99.7 rule.
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