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View synonyms for standard deviation
standard deviation
noun
, 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.
standard deviation
noun
- 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
standard deviation
/ stăn′dərd /
- A statistic used as a measure of the dispersion or variation in a distribution, equal to the square root of the arithmetic mean of the squares of the deviations from the arithmetic mean.
standard deviation
- In statistics , a measure of how much the data in a certain collection are scattered around the mean . A low standard deviation means that the data are tightly clustered; a high standard deviation means that they are widely scattered.
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Notes
About sixty-eight percent of the data are within one standard deviation of the mean.
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Word History and Origins
Origin of standard deviation1
First recorded in 1920–25
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Example Sentences
And against the first target the accuracy observed was about .7 mils, in standard deviation.
From Project Gutenberg
For each measurement, the coefficient of variation, standard deviation and probable error were computed.
From Project Gutenberg
This is the estimated standard deviation of population where the estimate is made from area.
From Project Gutenberg
This is called the index of variability or "standard deviation."
From Project Gutenberg
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