standard deviation
From Wiktionary, the free dictionary
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Etymology
Coined by English mathematician Karl Pearson in 1894 in his paper "On the dissection of asymmetrical frequency curves".
Noun
standard deviation (plural standard deviations)
- (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
Translations
statistical measure
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Further reading
standard deviation on Wikipedia.Wikipedia
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