Frequencies for first 10,000 rows of stresexp variable in natlterr1997 dataset :

   Expanded |
   State of |
  Residence |      Freq.     Percent        Cum.
------------+-----------------------------------
          5 |          1        0.01        0.01
         10 |          1        0.01        0.02
         11 |          1        0.01        0.03
         14 |          1        0.01        0.04
         31 |          1        0.01        0.05
         33 |          3        0.03        0.08
         37 |          1        0.01        0.09
         53 |      9,977       99.77       99.86
         54 |          6        0.06       99.92
         56 |          1        0.01       99.93
         60 |          7        0.07      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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