Frequencies for first 10,000 rows of prov2880 variable in pos1997 dataset :

    type of |
     action |      Freq.     Percent        Cum.
------------+-----------------------------------
            |          4        0.04        0.04
          1 |      2,745       27.45       27.49
          2 |      6,886       68.86       96.35
          3 |        204        2.04       98.39
          4 |         20        0.20       98.59
          5 |        139        1.39       99.98
          6 |          2        0.02      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 26 Jan 2016