Frequencies for first 10,000 rows of mracerec variable in natl2010 dataset :

   Mother's |
Race Recode |
        U;R |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |      6,103       61.03       61.03
          2 |        405        4.05       65.08
          3 |      2,559       25.59       90.67
          4 |        933        9.33      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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