Frequencies for first 10,000 rows of fracerec variable in natl2004 dataset :

   Father's |
Race Recode |
        U;R |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |      6,022       60.22       60.22
          2 |        482        4.82       65.04
          3 |      1,489       14.89       79.93
          4 |        575        5.75       85.68
          9 |      1,432       14.32      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 21 Jan 2016