Frequencies for first 10,000 rows of prov2860 variable in pos1991 dataset :

 volunteers |
    - total |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      9,851       98.51       98.51
        .23 |          1        0.01       98.52
        .25 |          3        0.03       98.55
         .5 |          4        0.04       98.59
        .75 |          5        0.05       98.64
          1 |          8        0.08       98.72
       1.05 |          1        0.01       98.73
       1.25 |          6        0.06       98.79
        1.5 |          3        0.03       98.82
       1.75 |          3        0.03       98.85
        1.8 |          1        0.01       98.86
          2 |          9        0.09       98.95
       2.25 |          2        0.02       98.97
        2.5 |          4        0.04       99.01
          3 |          7        0.07       99.08
        3.5 |          3        0.03       99.11
       3.75 |          3        0.03       99.14
          4 |          5        0.05       99.19
        4.5 |          3        0.03       99.22
       4.75 |          1        0.01       99.23
          5 |          3        0.03       99.26
       5.25 |          2        0.02       99.28
       5.75 |          1        0.01       99.29
       6.25 |          3        0.03       99.32
          7 |          3        0.03       99.35
       7.05 |          1        0.01       99.36
       7.25 |          1        0.01       99.37
       7.75 |          4        0.04       99.41
          8 |          4        0.04       99.45
       8.25 |          1        0.01       99.46
          9 |          1        0.01       99.47
         10 |          2        0.02       99.49
      10.25 |          1        0.01       99.50
      11.25 |          1        0.01       99.51
         12 |          2        0.02       99.53
         13 |          1        0.01       99.54
         14 |          1        0.01       99.55
      14.25 |          1        0.01       99.56
      14.75 |          2        0.02       99.58
         15 |          2        0.02       99.60
         16 |          3        0.03       99.63
      18.25 |          1        0.01       99.64
         20 |          1        0.01       99.65
      20.25 |          1        0.01       99.66
         21 |          1        0.01       99.67
         22 |          3        0.03       99.70
      22.25 |          1        0.01       99.71
       22.5 |          1        0.01       99.72
         24 |          2        0.02       99.74
         25 |          1        0.01       99.75
         27 |          1        0.01       99.76
      27.05 |          1        0.01       99.77
         28 |          2        0.02       99.79
       28.5 |          1        0.01       99.80
      30.25 |          1        0.01       99.81
         34 |          1        0.01       99.82
       35.5 |          1        0.01       99.83
         36 |          2        0.02       99.85
         42 |          1        0.01       99.86
         45 |          3        0.03       99.89
         48 |          1        0.01       99.90
         49 |          1        0.01       99.91
         66 |          1        0.01       99.92
      68.25 |          1        0.01       99.93
         70 |          1        0.01       99.94
        100 |          1        0.01       99.95
        101 |          1        0.01       99.96
        112 |          1        0.01       99.97
     124.75 |          1        0.01       99.98
        280 |          1        0.01       99.99
        796 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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