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standard deviation

 

Definition:

  1. statistical index of the degree of deviation from central tendency, namely, of the variability within a distribution; the square root of the average of the squared deviations from the mean.
  2. a measure of dispersion or variation used to describe a characteristic of a frequency distribution.

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© Copyright 2018 Wolters Kluwer. All Rights Reserved. Review date: Sep 19, 2016.

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