Frequencies for first 10,000 rows of frace variable in natl1977 dataset :

    Race of |
     Father |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |      6,138       61.38       61.38
          2 |      1,727       17.27       78.65
          3 |          1        0.01       78.66
          4 |          3        0.03       78.69
          7 |          7        0.07       78.76
          8 |          2        0.02       78.78
          9 |      2,122       21.22      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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