Frequencies for first 10,000 rows of prov3040 variable in pos1992 dataset :

     social |
worker (ms) |
          - |
arrangement |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      9,993       99.93       99.93
          1 |          2        0.02       99.95
          2 |          2        0.02       99.97
          4 |          2        0.02       99.99
       13.1 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 17 May 2017