Frequencies for first 10,000 rows of mracerec variable in natlterr2005 dataset :

   Mother's |
Race Recode |
        U;R |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |          1        0.01        0.01
          1 |      3,696       36.96       36.97
          2 |        381        3.81       40.78
          3 |          5        0.05       40.83
          4 |      5,917       59.17      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 22 Dec 2015