Frequencies for first 10,000 rows of mracerec variable in natl2013 dataset :

   Mother's |
Race Recode |
        U;R |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |      6,477       64.77       64.77
          2 |        450        4.50       69.27
          3 |      2,155       21.55       90.82
          4 |        918        9.18      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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