Measures of Relative Standing

Percentile Diagram

Representation of the 68–95–99.7 rule. The dark blue zone represents observations within one standard deviation ($\sigma$) to either side of the mean ($\mu$), which accounts for about 68.2% of the population. Two standard deviations from the mean (dark and medium blue) account for about 95.4%, and three standard deviations (dark, medium, and light blue) for about 99.7%.

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Measures of Relative Standing

Percentile Diagram

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