Frequencies for first 10,000 rows of mrace variable in natl1990 dataset :

    Race of |
     Mother |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |      6,522       65.22       65.22
          2 |      3,404       34.04       99.26
          3 |          3        0.03       99.29
          4 |          9        0.09       99.38
          5 |          4        0.04       99.42
          6 |          1        0.01       99.43
          7 |          4        0.04       99.47
          8 |         53        0.53      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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