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Standard Deviation

By Earthquake Hazards Program 2021 (approx.)
Bell curve with red in the middle, green in the opposite middle layers, and blue in the opposite outside layers
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Detailed Description

The standard deviation is how much a set of data is different from the curve it should make when plotted on a graph. Or, the square root of the average of the squares of deviations about the mean of a set of data. Standard deviation is a statistical measure of spread or variability.

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