Correlation Calculator
Calculate Pearson's correlation coefficient between two sets of values. The result updates as you type, with the working underneath so you can check it.
Your details
Result
Pearson correlation (r)
0.8783
very strong positive relationship
- R-squared
- 0.7714
- Pairs (n)
- 6
- Correlation does not show cause and effect.
Good to know: r = Σ(x−x̄)(y−ȳ) ÷ √(Σ(x−x̄)² Σ(y−ȳ)²)
About this tool
Formula
r = Σ(x−x̄)(y−ȳ) ÷ √(Σ(x−x̄)² Σ(y−ȳ)²)
Questions people ask
Does correlation mean causation?
No. Two things can move together because of a third factor, or by chance.
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How we calculate this
We use the standard published formula or definition for this calculation, and we show the working so you can check it.
Spotted a mistake? Tell us and we'll check it. How we check our calculators