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Standard deviation |
Also found in: Dictionary/thesaurus, Financial, Encyclopedia, Wikipedia, Hutchinson | 0.04 sec. |
Standard deviation A measure of the distribution of scores around the average (mean). In a normal distribution, two standard deviations above and below the mean includes about 95% of all samples. Mentioned in: Stanford-Binet Intelligence Scales, Wechsler Intelligence Test standard deviation Square root of the variance Statistics The most widely used measure of the dispersion of a set of values about a mean, which is equal to the positive square root of the variance, where a graphic representation of the data points is described by a curve with Gaussian distribution–GD–ie, bell-shaped. See Gaussian curve. How to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit webmaster's page for free fun content. |
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