Frequencies for first 10,000 rows of fracerec variable in natl2008 dataset :

   Father's |
Race Recode |
        U;R |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |      5,726       57.26       57.26
          2 |      1,975       19.75       77.01
          3 |         28        0.28       77.29
          4 |        106        1.06       78.35
          9 |      2,165       21.65      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 3 May 2016