standard deviation
From Wiktionary, the free dictionary
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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