Chapter 7: Annual 1996 salary and the educational background for a sample of 25 employees at a large Iowa manufacturing company. Col 1: Educ (number of years of formal schooling) Col 2: Salary (in $1000) 16 32.3 12 23.7 12 19.5 16 27.8 18 33.0 15 29.0 11 13.7 12 12.1 11 9.8 20 37.7 15 26.3 16 22.0 16 27.0 17 29.4 16 25.4 13 21.3 12 17.6 12 13.3 19 44.8 16 30.7 17 34.5 16 27.3 12 14.8 16 21.7 16 33.8