standard deviation

English

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Etymology

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Coined by English mathematician Karl Pearson in 1894 in his paper "On the dissection of asymmetrical frequency curves".

Noun

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standard deviation (plural standard deviations)

  1. (statistics) A measure of how spread out data values are around the mean, defined as the square root of the variance. Represented with the Greek letter σ (sigma).

Synonyms

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Translations

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Further reading

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