Simple Definition of correlation

from our Learner's Dictionary

correlation

noun

plural correlations
: the relationship between things that happen or change together
the correlation of brain size and/with intelligence
often + between
the high/strong correlation between poverty and crime [=the fact that crime is more common when there is more poverty]
Researchers have found a direct correlation between smoking and lung cancer.
She says that there's no correlation between being thin and being happy.

Cite this Entry

“Correlation.” Merriam-Webster.com Simple Definition, Merriam-Webster, https://www.merriam-webster.com/simple/correlation. Accessed 15 Apr. 2026.

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