Category:Standard Deviation
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This category contains results about Standard Deviation.
Definitions specific to this category can be found in Definitions/Standard Deviation.
Let $X$ be a random variable.
Then the standard deviation of $X$, written $\sigma_X$ or $\sigma$, is defined as the principal square root of the variance of $X$:
- $\sigma_X := \sqrt {\var X}$
Pages in category "Standard Deviation"
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