Frequencies for first 10,000 rows of regnres variable in natl2001 dataset :

  Region of |
  Residence |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |          1        0.01        0.01
          2 |          1        0.01        0.02
          3 |      9,997       99.97       99.99
          4 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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