September 29, 2017
Wrap Up for Anscombe Lab
High Leverage Observations
- Observation \(i\) has high leverage if \(x_i\) is far from \(\bar{x}\) – pulls the line close to \((x_i, y_i)\)
Plot of Residuals vs. Explanatory
- Look for even scatter aroud 0, no patterns
Plot of Residuals vs. Predicted/Fitted
- Look for even scatter aroud 0, no patterns