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Standard Deviations of the Mean

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Use the empirical rule of statistics to explain the percentage of data values in a normal distribution that fall within:

a) 1 standard deviation of the mean
b) 2 standard deviations of the mean
c) 3 standard deviations of the mean

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Solution Summary

The empirical rule of statistics is considered to apply numerical values for the percentage of data that falls between 1, 2 and 3 standard deviations of the mean. A link to a web-based resource is included to provide additional reading with respect to the use of the normal distribution in statistics.

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The empirical rule (also known as the three-sigma rule or the 68-95-99.7 rule) is helpful when studying normal distributions in statistics.

This rule states that for a data set that ...

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