Frequencies for first 10,000 rows of prov1150 variable in pos1997 dataset :

 registered |
    nurse - |
   contract |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      9,924       99.24       99.24
        .01 |          1        0.01       99.25
        .03 |          1        0.01       99.26
        .06 |          2        0.02       99.28
        .11 |         16        0.16       99.44
        .14 |          1        0.01       99.45
        .16 |          2        0.02       99.47
        .17 |          2        0.02       99.49
         .2 |          1        0.01       99.50
        .23 |          8        0.08       99.58
        .25 |          1        0.01       99.59
        .26 |          1        0.01       99.60
        .29 |          1        0.01       99.61
        .34 |          3        0.03       99.64
        .36 |          1        0.01       99.65
        .43 |          1        0.01       99.66
        .46 |          4        0.04       99.70
        .51 |          1        0.01       99.71
        .57 |          2        0.02       99.73
        .69 |          3        0.03       99.76
         .8 |          2        0.02       99.78
        .89 |          1        0.01       99.79
        .91 |          1        0.01       99.80
       1.03 |          2        0.02       99.82
       1.14 |          2        0.02       99.84
       1.19 |          1        0.01       99.85
       1.37 |          1        0.01       99.86
       1.54 |          1        0.01       99.87
        1.6 |          2        0.02       99.89
       1.73 |          1        0.01       99.90
       1.94 |          1        0.01       99.91
          2 |          1        0.01       99.92
       2.63 |          1        0.01       99.93
       3.74 |          1        0.01       99.94
       4.57 |          1        0.01       99.95
       6.51 |          1        0.01       99.96
      11.43 |          1        0.01       99.97
      12.86 |          1        0.01       99.98
         24 |          1        0.01       99.99
        193 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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