standard deviation
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.
Origin of standard deviation
1Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2024
How to use standard deviation in a sentence
And against the first target the accuracy observed was about .7 mils, in standard deviation.
Warren Commission (3 of 26): Hearings Vol. III (of 15) | The President's Commission on the Assassination of President KennedyFor each measurement, the coefficient of variation, standard deviation and probable error were computed.
American Weasels | E. Raymond HallThis is the estimated standard deviation of population where the estimate is made from area.
California Athabascan Groups | Martin A. BaumhoffThis is called the index of variability or "standard deviation."
The Social Direction of Evolution | William E. Kellicott
British Dictionary definitions for standard deviation
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
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
Scientific definitions for 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.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
Cultural definitions for 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.
Notes for standard deviation
The New Dictionary of Cultural Literacy, Third Edition Copyright © 2005 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
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