Enter Data

Enter X and Y values, one per line. Both must have the same number of values.

📌 X Variable

📌 Y Variable

Results

Pearson r

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Correlation coefficient

r² (Coefficient)

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Variance explained

N (pairs)

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Sample size

Strength

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Interpretation

Awaiting calculation...

Pearson correlation coefficient (r) measures the linear relationship between two variables, ranging from -1 to +1:

• |r| ≥ 0.8: Strong · |r| ≥ 0.5: Moderate · |r| ≥ 0.3: Weak · |r| < 0.3: Very weak / none

• r > 0: Positive correlation (both increase together)

• r < 0: Negative correlation (one increases as other decreases)

• r = 0: No linear correlation

✅ Correlation only measures linear relationships

✅ Outliers strongly influence the result

✅ Correlation does not imply causation