Frequencies for first 10,000 rows of f_morigin variable in natlterr2009 dataset :

  Origin of |
     Mother |
    (umhisp |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      2,456       24.56       24.56
          1 |      7,544       75.44      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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