Frequencies for first 10,000 rows of p2 variable in miper dataset :

         p2 |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      7,166       71.66       71.66
          1 |         34        0.34       72.00
          2 |         77        0.77       72.77
          3 |         60        0.60       73.37
          4 |         62        0.62       73.99
          5 |         55        0.55       74.54
          6 |         67        0.67       75.21
          7 |         65        0.65       75.86
          8 |        111        1.11       76.97
          9 |         89        0.89       77.86
         10 |        110        1.10       78.96
         11 |        115        1.15       80.11
         12 |        117        1.17       81.28
         13 |        142        1.42       82.70
         14 |        118        1.18       83.88
         15 |        132        1.32       85.20
         16 |        129        1.29       86.49
         17 |        120        1.20       87.69
         18 |        121        1.21       88.90
         19 |        120        1.20       90.10
         20 |        123        1.23       91.33
         21 |         82        0.82       92.15
         22 |        105        1.05       93.20
         23 |         81        0.81       94.01
         24 |         98        0.98       94.99
         25 |         67        0.67       95.66
         26 |         49        0.49       96.15
         27 |         58        0.58       96.73
         28 |         47        0.47       97.20
         29 |         49        0.49       97.69
         30 |         44        0.44       98.13
         31 |         25        0.25       98.38
         32 |         31        0.31       98.69
         33 |         29        0.29       98.98
         34 |         21        0.21       99.19
         35 |         15        0.15       99.34
         36 |         13        0.13       99.47
         37 |          8        0.08       99.55
         38 |         10        0.10       99.65
         39 |          3        0.03       99.68
         40 |          6        0.06       99.74
         41 |          4        0.04       99.78
         42 |          3        0.03       99.81
         43 |          4        0.04       99.85
         44 |          2        0.02       99.87
         45 |          5        0.05       99.92
         46 |          2        0.02       99.94
         47 |          1        0.01       99.95
         50 |          1        0.01       99.96
         56 |          2        0.02       99.98
         60 |          1        0.01       99.99
         85 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 18 Apr 2016