For the following five exercises, you will need to construct indicator variables to use categorical variables as explanatory variables in logistic regression. Be sure to review the material in Chapter 11 on models with categorical explanatory variables (pages 571-575) before attempting these exercises.
17.35 Reduction in force using logistic regression.
In Exercise 17.31, hypothetical data are given for a reduction in force (RIF). If there is a statistically significant difference in the RIF proportions based on age group, the employer needs to justify the difference based on other (nondiscriminatory) variables.
rif
17.35
(a) The model is significant. For a person over 40: 0.085. For a person under 40: 0.030. (b) Answers will vary.