Frequencies for first 10,000 rows of mracerec variable in natl2009 dataset :

   Mother's |
Race Recode |
        U;R |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |      7,571       75.71       75.71
          2 |      1,864       18.64       94.35
          3 |        314        3.14       97.49
          4 |        251        2.51      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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