Gesell Data
- Gesell Data: with child 18, r2=.41.
- Drop it: r2=.11, regression line shifts.
- Child 18 has X=42 mos, Y=57, extreme in X-direction, close to line.
- Child 19: X=17, Y=121,Y-outlier, high residual
- But dropping Child 19 does not cause change, not influential.