Frequencies for first 10,000 rows of prov5150 variable in pos1999 dataset :

nurses with |
      admin |
duties-cont |
       ract |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      9,982       99.82       99.82
        .03 |          1        0.01       99.83
        .06 |          2        0.02       99.85
        .11 |          2        0.02       99.87
        .23 |          1        0.01       99.88
        .29 |          1        0.01       99.89
        .36 |          1        0.01       99.90
        .46 |          1        0.01       99.91
        .83 |          1        0.01       99.92
        .86 |          1        0.01       99.93
       1.14 |          2        0.02       99.95
       2.86 |          1        0.01       99.96
      11.43 |          1        0.01       99.97
         16 |          1        0.01       99.98
      45.71 |          2        0.02      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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