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Pearson’s r

Pearson’s r Pearson’s r is a statistic that shows how strong the linear relationship is between two variables.

Pearson’s r is a statistic that shows how strong the linear relationship is between two variables. It can range from -1 for a perfect negative relationship to +1 for a perfect positive relationship, while 0 indicates no linear relationship.

Also see

Sources

Drafting source: Online Statistics Education, version 2 (David M. Lane, project leader). Version 2; publisher statement snapshot 2026-10-18; SHA-256 0dcad9ee85f61f9e2bb24d26279de155ac749164ea4da2a3bffeabcf9ea471a6. “Pearson's r” (pearson_r.html).
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PsychTerms (psychterms.org), CC BY 4.0, version 1. “Pearson’s r.” Development preview.

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