Get professional-grade accuracy with the Correlation Calculator 36. Calculate correlation coefficient. Designed for professionals and enthusiasts alike.
Formula
const x1 = inputs.x1 || 0; const y1 = inputs.y1 || 0; const x2 = inputs.x2 || 0; const y2 = inputs.y2 || 0; const x3 = inputs.x3 || 0; const y3 = inputs.y3 || 0; const xVals = [x1, x2, x3]; const yVals = [y1, y2, y3]; const n = 3; const sumX = xVals.reduce((a, b) => a + b, 0); const sumY = yVals.reduce((a, b) => a + b, 0); const sumXY = xVals.reduce((sum, x, i) => sum + x * yVals[i], 0); const sumX2 = xVals.reduce((sum, x) => sum + x * x, 0); const sumY2 = yVals.reduce((sum, y) => sum + y * y, 0); const num = n * sumXY - sumX * sumY; const den = Math.sqrt((n * sumX2 - sumX * sumX) * (n * sumY2 - sumY * sumY)); const r = den !== 0 ? num / den : 0; return { correlation: Math.round(r * 1000) / 1000, rSquared: Math.round(r * r * 1000) / 1000, strength: Math.abs(r) > 0.7 ? 'Strong' : Math.abs(r) > 0.4 ? 'Moderate' : 'Weak' };X1
1
Y1
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X2
2
Y2
4
X3
3
Y3
6
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Correlation Calculator 36 estimates Correlation Coefficient (r), R-Squared, Correlation Strength from X1, Y1, X2, Y2. Use it to compare scenarios and understand which inputs drive the biggest changes. Results are directional estimates — verify with current, authoritative sources before making financial, legal, or health decisions.
Use this statistics calculator to compare scenarios before committing money, time, or a provider conversation.
The estimate combines X1, Y1, X2 and returns Correlation Coefficient (r), R-Squared, Correlation Strength.
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This calculator is provided for educational and informational purposes only. It does not constitute professional legal, financial, medical, or engineering advice. Results are estimates based on the inputs provided and should not be relied upon for making significant decisions. Consult a qualified professional to verify your specific situation. CalculateThis.ai disclaims any liability for damages resulting from the use of this tool.
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