Frequencies for first 10,000 rows of mracerec variable in natl2012 dataset :

   Mother's |
Race Recode |
        U;R |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |      6,082       60.82       60.82
          2 |        385        3.85       64.67
          3 |      2,539       25.39       90.06
          4 |        994        9.94      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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