Frequencies for first 10,000 rows of frace variable in natl1979 dataset :

    Race of |
     Father |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |         21        0.21        0.21
          1 |      6,062       60.62       60.83
          2 |      1,675       16.75       77.58
          3 |          4        0.04       77.62
          4 |          2        0.02       77.64
          5 |          1        0.01       77.65
          6 |          2        0.02       77.67
          9 |      2,233       22.33      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 3 Jan 2016