Frequencies for first 10,000 rows of regnres variable in natl1997 dataset :

  Region of |
  Residence |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |          3        0.03        0.03
          1 |          3        0.03        0.06
          2 |          3        0.03        0.09
          3 |      9,989       99.89       99.98
          4 |          2        0.02      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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