au·​to·​cor·​re·​la·​tion ˌȯ-tō-ˌkȯr-ə-ˈlā-shən How to pronounce autocorrelation (audio)
: the correlation between paired values of a function of a mathematical or statistical variable taken at usually constant intervals that indicates the degree of periodicity of the function

Examples of autocorrelation in a Sentence

Recent Examples on the Web Such a trend would have a negative autocorrelation — the average tends to revert to the mean over time. G. Elliott Morris, ABC News, 25 Apr. 2024 When autocorrelation is too high, a model is not reacting enough to movement in the underlying data. G. Elliott Morris, ABC News, 3 Nov. 2023 Ever since the 1984 result, one technique that had proved fruitful was to look at the amount of overlap a candidate set of points has with a shifted copy of itself, using something called an autocorrelation function. Anna Kramer, Quanta Magazine, 19 July 2023 The problem is one that regular readers may remember: autocorrelation, also known as non-independence of observations. Neuroskeptic, Discover Magazine, 22 Mar. 2018 One main root of the problem is spatial autocorrelation - the fact that the fMRI signal tends to be similar (correlated) across nearby regions. Neuroskeptic, Discover Magazine, 5 May 2016

These examples are programmatically compiled from various online sources to illustrate current usage of the word 'autocorrelation.' Any opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback about these examples.

Word History


auto- + correlation

First Known Use

1933, in the meaning defined above

Time Traveler
The first known use of autocorrelation was in 1933

Dictionary Entries Near autocorrelation

Cite this Entry

“Autocorrelation.” Dictionary, Merriam-Webster, Accessed 18 Jun. 2024.

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