# standard deviation

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Related to Standard deviations: variance, standard error

## standard deviation

n. Abbr. SD
A statistic used as a measure of the dispersion or variation in a distribution or set of data, equal to the square root of the arithmetic mean of the squares of the deviations from the arithmetic mean.

## standard deviation

n
(Statistics) 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

## stand′ard devia′tion

n. 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.
ThesaurusAntonymsRelated WordsSynonymsLegend:
 Noun 1 standard deviation - the square root of the variancestatistics - a branch of applied mathematics concerned with the collection and interpretation of quantitative data and the use of probability theory to estimate population parametersvariance - the second moment around the mean; the expected value of the square of the deviations of a random variable from its mean value
Translations
směrodatná odchylka
keskihajonta
écart type
staðalfrávik
ส่วนเบี่ยงเบนมาตรฐาน
References in periodicals archive ?
If you have wildly fluctuating datapoints, the standard deviations will be larger.
15 standard deviations lower than classmates who are a decade younger.
028 standard deviations in a healthy-vendor contract year, relative to the year before the contract.
The study found that standard deviations in temperature in both summer and winter adversely affected death rates.
The conceptual mechanics of the calculation of standard deviations are fairly simple.
The Florida statute at issue defined "significantly subaverage general intellectual functioning" as "performance that is two or more standard deviations from the mean score on a standardized intelligence test"--i.
This is two standard deviations below the value estimate.
599 standard deviations below the historical high in December 2008 and 1.
Although all scholarly research articles generally report descriptive data in some way (for example, means, standard deviations, percentages), even this relatively simple presentation of basic data can lead to confusion.
The authors account for these years by using weighted standard deviations for firm entry, firm exit, and job reallocation rates to see if states and metro areas have similar trends and if the similarities (or differences) change over time.
Combination of B1-B4 using one-half standard deviations shocks###20###22###25###24###23###22###18###13
All annualized returns will be accompanied by standard deviations to test for differences in volatility.

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