Definition of standard deviation in English:

standard deviation

Line breaks: stand|ard de¦vi|ation

noun

Statistics
  • A quantity expressing by how much the members of a group differ from the mean value for the group.
    More example sentences
    • Average values and standard deviations were then calculated for each of the compounds in the experiment.
    • If no standard deviations were reported then we used the average standard deviation for all the remaining studies.
    • Mean values and standard deviations were calculated for all variables.

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Pronunciation: ˌastrəˈgāSHən
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