correlation coefficient

noun

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

Recent Examples of correlation coefficient from the Web

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.