Frequencies for first 10,000 rows of fracerec variable in natl2005 dataset :

   Father's |
Race Recode |
        U;R |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |      5,937       59.37       59.37
          2 |        484        4.84       64.21
          3 |      1,490       14.90       79.11
          4 |        594        5.94       85.05
          9 |      1,495       14.95      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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