Establishes or shows a mutual relationship between two or more things, or shows they tend to happen or change together.
From Latin correlatus, combining co- (together) and relatus (brought, related). The term entered English in the 17th century as scientists needed language to describe mutual dependencies.
When ice cream sales correlate with drowning deaths, it doesn't mean ice cream kills people—they both just happen in summer, which is a perfect example of why correlation is not causation!
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