Frequencies for first 10,000 rows of crace variable in natl1975 dataset :

    Race of |
      Child |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |          1        0.01        0.01
          1 |      6,625       66.25       66.26
          2 |      3,354       33.54       99.80
          3 |          4        0.04       99.84
          4 |          5        0.05       99.89
          5 |          4        0.04       99.93
          7 |          5        0.05       99.98
          8 |          2        0.02      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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