Frequencies for first 10,000 rows of crace variable in natl1970 dataset :

    Race of |
      Child |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |      6,752       67.52       67.52
          2 |      3,215       32.15       99.67
          3 |          2        0.02       99.69
          4 |          3        0.03       99.72
          5 |          1        0.01       99.73
          7 |         18        0.18       99.91
          8 |          9        0.09      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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