DATA: income.dat
Personal income and demographic data from the March, 2011 supplement to
the Current Population Survey.  Data on all 80,976 respondents aged 25
to 64 years who were currently in the labor force and who listed their
race as Asian, black, or white.  This is a random sample from all such
residents of the United States.
variables and coding:
Sex     1=male, 2=female
Income  Total personal income, dollars
Race    Person's race, 1=white, 2=black, 4=Asian
Age     Person's age in years
Educ    Educational attainment,
                1=less than high school
                2=some high school but no diploma
                3=high school graduate
                4=some college but less than bachelor's degree
                5=bachelor's degree
                6=master's, professional, or doctoral degree
        (Educational attainment is condensed from 16 levels in
         the CPS data.)

Data downloaded from http://bcs.whfreeman.com/bps6e/#719417__769372__ on 4/27/15.