Create the data set. The data set JOBS contains average salary data for several categories of engineer. It also indicates the number of engineers in each category.
data jobs; length eng $5; input eng dollars num; datalines; Civil 27308 73273 Aero 29844 70192 Elec 22920 89382 Mech 32816 19601 Chem 28116 25541 Petro 18444 34833 ;