Frequencies for first 10,000 rows of mracerec variable in natl2003 dataset :

   Mother's |
Race Recode |
        U;R |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |      6,412       64.12       64.12
          2 |        408        4.08       68.20
          3 |      2,473       24.73       92.93
          4 |        707        7.07      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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