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

  Origin of |
 Mother U;R |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      3,075       30.75       30.75
          1 |      6,925       69.25      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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