Frequencies for first 10,000 rows of frace variable in natl1980 dataset :

    Race of |
     Father |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |         21        0.21        0.21
          1 |      6,241       62.41       62.62
          2 |      1,521       15.21       77.83
          3 |          1        0.01       77.84
          4 |          4        0.04       77.88
          9 |      2,212       22.12      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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