Frequencies for first 10,000 rows of fracerec variable in natl2006 dataset :

   Father's |
Race Recode |
        U;R |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |      5,862       58.62       58.62
          2 |        498        4.98       63.60
          3 |      1,475       14.75       78.35
          4 |        652        6.52       84.87
          9 |      1,513       15.13      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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