# standard deviation

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Related to standard deviation: variance

## standard deviation

*n.*

*Abbr.*

**SD**

A statistic used as a measure of the dispersion or variation in a distribution or set of data, equal to the square root of the arithmetic mean of the squares of the deviations from the arithmetic mean.

## standard deviation

*n*

(Statistics)

*statistics*a measure of dispersion obtained by extracting the square root of the mean of the squared deviations of the observed values from their mean in a frequency distribution## stand′ard devia′tion

*n.*

*Statistics.*

a measure of dispersion in a frequency distribution, equal to the square root of the mean of the squares of the deviations from the arithmetic mean of the distribution.

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Noun | 1. | standard deviation - the square root of the variancestatistics - a branch of applied mathematics concerned with the collection and interpretation of quantitative data and the use of probability theory to estimate population parameters variance - the second moment around the mean; the expected value of the square of the deviations of a random variable from its mean value |

Translations

**směrodatná odchylka**

**keskihajonta**

**écart type**

**staðalfrávik**

**ส่วนเบี่ยงเบนมาตรฐาน**

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