Standard deviation: Difference between revisions

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The standard deviation is the square root of the variance.
The standard deviation is the square root of the variance.


Standard deviation is used widely as a measure of risk, because it is relatively easy to calculate, and to compare and to combine with the standard deviations of other variables.
Standard deviation is used widely as a measure of risk, because it is relatively easy to calculate, and to compare and combine with the standard deviations of other variables.





Revision as of 22:42, 11 December 2014

(SD).

Standard deviation measures the spread of data around their mean.

The standard deviation is the square root of the variance.

Standard deviation is used widely as a measure of risk, because it is relatively easy to calculate, and to compare and combine with the standard deviations of other variables.


See also