Pearson Correlation
Math CalculatorsCalculate the correlation coefficient (r) between two variables.
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Correlation (r)
About This Tool
Measure the linear relationship between two datasets. Find out if variables are positively or negatively correlated with the Pearson Correlation Coefficient.
Frequently Asked Questions
The value of $r$ ranges from -1 to 1. 1 indicates perfect positive correlation, -1 indicates perfect negative correlation, and 0 indicates no linear relationship.
No. Even if two variables have a high correlation coefficient, it does not mean that one variable causes the change in the other. There may be a third hidden factor.
Use Pearson for linear relationships with continuous, normally distributed data. Use Spearman if your data is ordinal or the relationship is non-linear but monotonic.
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