correlation coefficient


Definition of correlation coefficient

: a number or function that indicates the degree of correlation between two sets of data or between two random variables and that is equal to their covariance divided by the product of their standard deviations

Examples of correlation coefficient in a Sentence

Recent Examples on the Web The table below shows the correlation coefficient between Biden’s support and the share of people in a county reporting certain ancestries—only those reported by at least 2 million people are included. Dan Kopf, Quartz, "These ancestries are most correlated with living in Trump country," 19 Nov. 2020 This time, the correlation coefficient between the actual ranking and prediction maintained accuracy up to about four months into the future. Billboard Japan, Billboard, "Billboard Japan & NTT Data’s Joint Research Predicts Future Hits From Chart Data & Cerebral Information," 28 Sep. 2020 By examining dual polarized radar images, correlation coefficient values produced for returning echoes can be applied to separate biological phenomena from the meteorological. Rick Steelhammer,, "Weather radar has been picking up swarms of dragonflies, perhaps because of heat wave, forecasters say," 22 Sep. 2019 The correlation coefficient between the Chinese currency and the region’s stocks rose to 47 percent this week. Washington Post, "Looking for a Trade War Winner? There Aren’t Any," 19 Sep. 2019 Super-resolution reflectivity and velocity are the must-haves in a radar app, but RadarScope doubles down with the addition of dual-pol products (correlation coefficient, differential reflectivity and more). Angela Fritz, Washington Post, "8 last-minute gift ideas for the weather geek in your life," 19 Dec. 2017 Even though the correlation coefficient was 0.1, running the algorithm in memory efficiently identified most of the correlated points, achieving results similar to a traditional classifier implemented in software. John Timmer, Ars Technica, "Who needs a CPU? Phase change memory acts as an analog computer," 26 Oct. 2017 Over the past five years, the dollar-yen exchange rate and the Nikkei 225 equity index have displayed a correlation coefficient of over 0.9, according to FactSet data. Mike Bird, WSJ, "Dollar’s Fall Threatens Foreign Stock Markets," 31 July 2017

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'correlation coefficient.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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First Known Use of correlation coefficient

1895, in the meaning defined above

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Time Traveler for correlation coefficient

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The first known use of correlation coefficient was in 1895

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Statistics for correlation coefficient

Last Updated

2 Dec 2020

Cite this Entry

“Correlation coefficient.” Dictionary, Merriam-Webster, Accessed 23 Jan. 2021.

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