What is Cook's Distance?
Not all outliers are equal. Some points have a strong influence on the regression line. Cook's Distance measures how much each row affects the model.
Interpretation:
Interpretation:
- D > 4/n → influential point
- Influential points can distort coefficients and reduce accuracy
Try it in the app
Try: Run regression → scroll to Cook's D chart in Results. Rows above the dashed threshold may need investigation.