Here is a scatterplot of the residuals from the regression in Exercise 16:

a) For Behemoth, the data value for Speed is 123, and the predicted value is 130.15. If we change the data value to 124 and recompute the regression, the predicted value becomes 130.89. What is the leverage for Behemoth?

b) For MCM the data value for Speed is 86 and the predicted value is 73.33. Change the data value for MCM to 87, recompute the regression, and calculate the leverage for MCM.

c) Does Behemoth have a high inf luence on the regression?

d) Does MCM have a high inf luence on the regression?

Transcribed Image Text:

15 • MCM 10 + 20 40 60 80 100 120 140 -5 Speed • Behemoth -10 + -15 -20 Residuals