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standard deviation
(redirected from Stddev)

   Also found in: Medical, Financial, Encyclopedia, Wikipedia 0.01 sec.
standard deviation
n. Abbr. SD
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
n
(Mathematics & Measurements / 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

standard deviation  (stndrd)
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.
ThesaurusLegend:  Synonyms Related Words Antonyms
Noun1.standard deviation - the square root of the variance
statistics - a branch of applied mathematics concerned with the collection and interpretation of quantitative data and the use of probability theory to estimate population parameters
variance - the second moment around the mean; the expected value of the square of the deviations of a random variable from its mean value


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The results for StdDev are shifted in contrast to MaxDist and higher convergence rates are reached (Figure 2(a)).
Retention, and Transfers of Critical Thinking in Experiment 1 Measures Effects Audio With Organizers A (n = 16) Mean Stddev Evaluations A+C vs.
Firm risk is controlled for using the standard deviation of stock returns for the period 220 to 21 days prior to the announcement date, STDDEV, and by dummy variables for Moody's bond ratings A or higher, Baa, Ba, and B.
 
 
 
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