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Sheppard's correction

[shep-erdz]
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noun Statistics.
  1. a method of correcting the bias in standard deviations and higher moments of distributions that arises from grouping values of the variable.
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Origin of Sheppard's correction

named after William F. Sheppard (1863–1936), English statistician
Also called Sheppard's adjustment.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018