correlation has 4 distinct synonyms spread across 3 of its 3 senses. Each sense below keeps its own list, because a synonym belongs to a meaning and not to a word: swapping one sense's substitute into another sense's sentence is how a thesaurus makes writing worse. WordNet records no antonym for it — antonymy is a relation between word forms rather than concepts, so it is deliberately sparse.
Counts are distinct word forms across every sense. A synonym that appears under three senses is counted once here and shown three times below, under each sense it belongs to.
a statistic representing how closely two variables co-vary; it can vary from -1 (perfect negative correlation) through 0 (no correlation) to +1 (perfect positive correlation)
“what is the correlation between those two variables?”
Synonyms, antonyms and the broader and narrower relations for correlation come from Princeton University’s WordNet. Full sources and licences.
a statistical relation between two or more variables such that systematic changes in the value of one variable are accompanied by systematic changes in the other