Standard deviation is a widely used measure of variability or diversity used in statistics and probability theory.

Look up standard deviation in Wiktionary, the free dictionary.

Standard Deviation(s) may also refer to:

• "Standard Deviation" (Everybody Loves Raymond), an episode of Everybody Loves Raymond
• "Standard Deviation", an episode of Eerie, Indiana: The Other Dimension
• Standard Deviations (album), a 2003 album by the Fullerton College Jazz Band
• Standard Deviations (exhibition), a 2011–12 exhibition of digital typefaces at the Museum of Modern Art, New York
• Standard Deviation (record label), Ukrainian record label

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