Special software is required to use some of the files in this section: .dta.
Problem Set 1 (PDF)
Problem Set 2 (PDF)
Problem Set 3 (PDF)
Problem Set 4 (PDF); tspsimr7172.dta (DTA)
The statistical software package STATA® may help in solving these problems. A STATA® tutorial is available in the study materials section.
Problem Set 5 (PDF)