Frequencies for first 10,000 rows of mracerec variable in natl2007 dataset :

   Mother's |
Race Recode |
        U;R |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |      6,232       62.32       62.32
          2 |        423        4.23       66.55
          3 |      2,565       25.65       92.20
          4 |        780        7.80      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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