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Correlation Coefficient Calculator

Compute Pearson's r for two data sets.

Enter equal-length X and Y sets.

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How to use this calculator

Enter matching X and Y values (same count).

Formula / method used

r = (nΣxy − ΣxΣy) / √((nΣx² − (Σx)²)(nΣy² − (Σy)²))

Frequently asked questions

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