Frequencies for first 10,000 rows of mracerec variable in natlterr2012 dataset :

   Mother's |
Race Recode |
        U;R |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |      3,923       39.23       39.23
          2 |        550        5.50       44.73
          3 |         15        0.15       44.88
          4 |      5,512       55.12      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 5 May 2016