Frequencies for first 10,000 rows of prov1150 variable in pos1998 dataset :

 registered |
    nurse - |
   contract |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      9,937       99.37       99.37
        .03 |          1        0.01       99.38
        .06 |          2        0.02       99.40
        .09 |          1        0.01       99.41
        .11 |          7        0.07       99.48
        .17 |          3        0.03       99.51
        .23 |          5        0.05       99.56
        .25 |          1        0.01       99.57
        .26 |          1        0.01       99.58
        .34 |          5        0.05       99.63
        .43 |          3        0.03       99.66
        .46 |          6        0.06       99.72
         .8 |          1        0.01       99.73
        .91 |          1        0.01       99.74
        .96 |          1        0.01       99.75
       1.03 |          3        0.03       99.78
       1.09 |          1        0.01       99.79
       1.14 |          2        0.02       99.81
       1.26 |          1        0.01       99.82
       1.34 |          1        0.01       99.83
        1.6 |          3        0.03       99.86
       1.66 |          1        0.01       99.87
       1.94 |          1        0.01       99.88
          2 |          1        0.01       99.89
        2.3 |          1        0.01       99.90
       3.69 |          1        0.01       99.91
       4.57 |          1        0.01       99.92
        4.8 |          1        0.01       99.93
       6.51 |          1        0.01       99.94
      10.57 |          1        0.01       99.95
      11.43 |          1        0.01       99.96
      21.14 |          1        0.01       99.97
      45.71 |          1        0.01       99.98
     171.43 |          1        0.01       99.99
     263.93 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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