Standard deviation: Difference between revisions
From ACT Wiki
Jump to navigationJump to search
imported>Administrator (CSV import) |
imported>Doug Williamson m (Spacing 20/8/13) |
||
| Line 1: | Line 1: | ||
(SD). Standard deviation measures the spread of data around their mean. The standard deviation is the square root of the variance. | (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, compare and 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, compare and combine with the standard deviations of other variables. | ||
== See also == | == See also == | ||
| Line 15: | Line 20: | ||
* [[Variance]] | * [[Variance]] | ||
* [[Volatility]] | * [[Volatility]] | ||
Revision as of 09:32, 20 August 2013
(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, compare and combine with the standard deviations of other variables.
