Frequencies for first 10,000 rows of fracerec variable in natlterr2005 dataset :

   Father's |
Race Recode |
        U;R |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |          1        0.01        0.01
          1 |      3,620       36.20       36.21
          2 |        368        3.68       39.89
          3 |          4        0.04       39.93
          4 |      4,409       44.09       84.02
          9 |      1,598       15.98      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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