Frequencies for first 10,000 rows of frace variable in natl2007 dataset :

   Father's |
     Race U |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |      5,834       58.34       58.34
          2 |        492        4.92       63.26
          3 |      1,527       15.27       78.53
          4 |         12        0.12       78.65
          5 |         13        0.13       78.78
          6 |         39        0.39       79.17
          7 |        200        2.00       81.17
         78 |        300        3.00       84.17
         99 |      1,583       15.83      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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