For Exercises 17.1 and 17.2, see pages 17-3 to 17-4; for 17.3 and 17.4, see page 17-5; for 17.5 to 17.7, see page 17-8; for 17.8 to 17.10, see page 17-11; and for 17.11 to 17.13, see page 17-14.
17.7 Interpreting an odds ratio.
If we apply the exponential function to the fitted model in Example 17.6, we get
Show that for any value of the quantitative explanatory variable , the odds ratio for increasing by 1,
is . This justifies the interpretation given at the end of Example 17.6.
17.7