State the difference between correlation and regression.

Question

Accepted Answer

| Feature | Correlation | Regression |
|---------|------------|------------|
| Purpose | Measures strength of linear relationship | Establishes functional relationship for estimation |
| Symmetry | $r(x,y) = r(y,x)$ | Regression of Y on X ≠ Regression of X on Y |
| Causality | Does not indicate cause-effect | Assumes cause-effect relationship |
| Purpose | Known | Predicts value of dependent variable |