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

   Father's |
Race Recode |
        U;R |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |      5,834       58.34       58.34
          2 |        492        4.92       63.26
          3 |      1,527       15.27       78.53
          4 |        564        5.64       84.17
          9 |      1,583       15.83      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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