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autocorrelation

[aw-toh-kawr-uh-ley-shuh n, -kor-]
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noun Statistics.
  1. the correlation of an ordered series of observations with the same series displaced by the same number of terms.

Origin of autocorrelation

First recorded in 1945–50; auto-1 + correlation
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
British Dictionary definitions for autocorrelation

autocorrelation

noun statistics
  1. the condition occurring when successive items in a series are correlated so that their covariance is not zero and they are not independentAlso called: serial correlation
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