Data files for a number of the end-of-chapter exercises can be found here.
Chapter 5 (Excel files)
Chapter 6 (Excel files)
Chapter 7 (Excel file)
Chapter 8 (Excel file)
Chapter 9 (Excel file)
Chapter 10 (Excel file)
Chapter 11 (Excel file)
Chapter 12 (Excel file)
Chapter 14 (Excel file)
Chapter 15 (Excel file)
