Frequencies for first 10,000 rows of crace variable in natl1972 dataset :

    Race of |
      Child |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |      6,669       66.69       66.69
          2 |      3,294       32.94       99.63
          3 |          1        0.01       99.64
          4 |          1        0.01       99.65
          5 |          5        0.05       99.70
          6 |          1        0.01       99.71
          7 |         28        0.28       99.99
          8 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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