Correlation Coefficient Calculator

Calculate the Pearson correlation coefficient (r) between two variables. Measures the strength and direction of linear relationships.

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Data Points (x, y) *

Each line: x,y (comma or space separated)

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Correlation Coefficient

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Scatter Plot

Data points with correlation visualization

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Calculation Breakdown

Step-by-step correlation calculation

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Correlation (r)

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Strength

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R²

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Coefficient

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Data Points

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Interpretation

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Meaning

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Mean X

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x̄

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Mean Y

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Covariance

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Cov(x,y)

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Sample Size

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Correlation Formulas

Key correlation concepts

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Correlation Tips

Understanding correlation

📊 Statistical Disclaimer: This calculator computes the Pearson correlation coefficient (r). Correlation does not imply causation. r ranges from -1 to +1, where 0 indicates no linear relationship.