Frequencies for first 10,000 rows of crace variable in natl1978 dataset :

    Race of |
      Child |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |         18        0.18        0.18
          1 |      6,467       64.67       64.85
          2 |      3,487       34.87       99.72
          3 |          7        0.07       99.79
          4 |          3        0.03       99.82
          5 |          7        0.07       99.89
          6 |          2        0.02       99.91
          7 |          3        0.03       99.94
          8 |          6        0.06      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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