Use the data in the preceding exercise.
a. What is the lift that the classification model provides if 5 observations are selected by the model compared to randomly selecting 5 observations?

b. What is the lift that the classification model provides if 8 observations are selected by the model compared to randomly selecting 8 observations?

Data from Exercises 25

Answer the following questions using the accompanying data set that lists the actual class memberships and predicted Class 0 (nontarget class) probabilities for 10 observations.