A scatterplot and fitted regression line of the data from Exercise 12.S.6 follow. The individual birds are labeled in the plot.

(a) Which bird/point has the largest regression residual?
(b) Which bird(s)/points(s) have the most leverage?
(c) Are there any birds/points that are influential?
(d) Invent your own bird observation of x = wing length and y = branch diameter that would be an example of a regression outlier, but not an influential observation.
(e) Invent your own bird observation of x = wing length and y = branch diameter that would be an example of a leverage point that is not influential.
(f) Invent your own bird observation of x = wing length and y = branch diameter that would an example of an influential point.

Transcribed Image Text:

#6 1.5 1.3 1.2 1.0 79 80 8 8283 8 Wing length (mm)