# 6.5: Empirical Rule

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**Basic**Created by: CK-12
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Empirical Rule

Empirical Rule

The Empirical Rule is also known as the 68-95-99.7 Rule. When 68% of the data values would be located within 1 standard deviation of the mean, 95% of the data values would be located within 2 standard deviations of the mean, and 99.7% of the data values would be located within 3 standard deviations of the mean, statisticians refer to this as the 68-95-99.7 Rule.68-95-99.7 Rule

68-95-99.7 Rule

When 68% of the data values would be located within 1 standard deviation of the mean, 95% of the data values would be located within 2 standard deviations of the mean, and 99.7% of the data values would be located within 3 standard deviations of the mean, statisticians refer to this as the 68-95-99.7 Rule.bell curve

bell curve

A normal distribution curve is also known as a bell curve.normal distributed

normal distributed

If data is normally distributed, the data set creates a symmetric histogram that looks like a bell.### Image Attributions

## Description

Use percentages associated with normal distributions to solve problems.

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## Date Created:

Feb 24, 2012## Last Modified:

Jul 22, 2015## Vocabulary

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