Calculated Pearson’s Product-Moment Coefficient Analysis
Introduction & Importance
Pearson’s product-moment coefficient, also known as Pearson’s r, is a measure of the linear correlation between two variables X and Y. It’s a fundamental statistical tool that helps understand the relationship between two variables…
How to Use This Calculator
- Enter the values for variable X.
- Enter the values for variable Y.
- Enter the sample size (N).
- Click ‘Calculate’.
Formula & Methodology
The formula for Pearson’s r is:
r = (n(ΣXY) – (ΣX)(ΣY)) / √[(nΣX² – (ΣX)²)[nΣY² – (ΣY)²]]
Real-World Examples
Data & Statistics
| X | Y |
|---|---|
| 1 | 2 |
Expert Tips
- Pearson’s r only measures linear relationships.
- It’s a unitless measure, ranging from -1 to 1.
- Values close to 1 or -1 indicate strong linear relationships.
Interactive FAQ
What does Pearson’s r measure?
Pearson’s r measures the strength and direction of a linear relationship between two variables.