Frequencies for first 10,000 rows of fracerec variable in natl2012 dataset :

   Father's |
Race Recode |
        U;R |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |      5,880       58.80       58.80
          2 |        472        4.72       63.52
          3 |      1,432       14.32       77.84
          4 |        777        7.77       85.61
          9 |      1,439       14.39      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 5 May 2016