What percentage of scores fall within 3 standard deviations of the mean?
A)50%
B)95%
C)68%
D)99.5%

Name: What percentage of scores fall within 3 standard deviations of the mean? A)50% B)95% C)68% D)99.5%
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Question

Quizplus · Accepted Answer

According to the empirical rule (also known as the 68-95-99.7 rule) in statistics, approximately 99.7% of the data within a normal distribution falls within three standard deviations of the mean. Therefore, the closest option provided is 99.5%.

What Percentage of Scores Fall Within 3 Standard Deviations of the Mean