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Correlation Coefficient Calculator

Compute the Pearson correlation coefficient (r) between two variables from paired summary statistics — n, Σxy, Σx, Σy — to measure how strongly they move together linearly. The number ranges from −1 (perfect negative linear relationship) through 0 (no linear relationship) to +1 (perfect positive linear relationship).

Number of Pairs

Sum of XY

Sum of X

Sum of Y

Sum of X²

Sum of Y²

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Statistics

Linear Regression Calculator

Find the linear relationship between two variables by computing the slope, correlation coefficient, and R² from paired data points. Use it when analyzing trends in sales, scientific experiments, or any dataset where you want to predict one variable from another.

X Values (comma separated)

Y Values (comma separated)

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Key differences

	Correlation Coefficient Calculator	Linear Regression Calculator
Category	Statistics	Statistics
Inputs required	6	3
Result	Correlation Coefficient	Result
What it does	Compute the Pearson correlation coefficient (r) between two variables from paired summary statistics — n, Σxy, Σx, Σy — to measure how strongly they move together linearly. The number ranges from −1 (perfect negative linear relationship) through 0 (no linear relationship) to +1 (perfect positive linear relationship).	Find the linear relationship between two variables by computing the slope, correlation coefficient, and R² from paired data points. Use it when analyzing trends in sales, scientific experiments, or any dataset where you want to predict one variable from another.