Chapter 9, Problem 18E

More hill races Here is the regression for the women’s records for the same Scottish hill races we considered in Exercise 14:

Dependent variable is: Women’s Time (mins)

R-squared = 96.7% s = 10.06

Variable	Coefficient
Intercept	–11.6545
Climb (m)	0.045195
Distance	4.43427

1. a) Compare the regression model for the women’s records with that found for the men’s records in Exercise 14.

Here’s a scatterplot of the residuals for this regression:

1. b) Discuss the residuals and what they say about the assumptions and conditions for this regression.