autocorrelation

[aw-toh-kawr-uh-ley-shuhn, -kor-]

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noun Statistics.

the correlation of an ordered series of observations with the same series displaced by the same number of terms.

Origin:
1945–50; auto-¹ + correlation

Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2012.
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Link To autocorrelation

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Autocorrelation has a plethora of syllables.

So is cyclotrimethylenetrinitramine. Does it mean:

a white, crystalline, water-insoluble, powerful high explosive, C3H6N6O6, used chiefly in bombs and shells.

the estimation of something as valueless (encountered mainly as an example of one of the longest words in the English language).

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Collins

World English Dictionary

autocorrelation (ˌɔːtəʊˌkɒrɪˈleɪʃən)

—n
	Also called: serial correlation the condition occurring when successive items in a series are correlated so that their covariance is not zero and they are not independent

Collins English Dictionary - Complete & Unabridged 10th Edition
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009
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autocorrelation

au·to·cor·re·la·tion