# correlation

> English word · Noun · IPA /ˌkɒɹ.əˈleɪ.ʃən/ · frequency rank #8,771

## Definitions
1. A reciprocal, parallel or complementary relationship between two or more comparable objects.
2. One of the several measures of the linear statistical relationship between two random variables, indicating both the strength and direction of the relationship.
3. An isomorphism from a projective space to the dual of a projective space, often to the dual of itself.

## Etymology
From Middle French corrélation. Morphologically correlate + -ion.

## Easily confused with
- **correction** (https://plainspell.com/en/vs/correction-vs-correlation)

## Common misspellings (15)
`ccorrelation`, `corelation`, `corerlation`, `correaltion`, `correlaiton`, `correlasion`, `correlatino`, `correlationn`, `correlatoin`, `correlattion`, `correllation`, `correltaion`, `corrleation`, `crorelation`, `ocrrelation`

## Source
Compiled from Wiktionary via kaikki.org (CC BY-SA). Data vintage: 2026-05-06.
Canonical page: https://plainspell.com/en/word/correlation