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

         p2 |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      7,488       74.88       74.88
          1 |         46        0.46       75.34
          2 |         57        0.57       75.91
          3 |         42        0.42       76.33
          4 |         52        0.52       76.85
          5 |         44        0.44       77.29
          6 |         58        0.58       77.87
          7 |         66        0.66       78.53
          8 |         83        0.83       79.36
          9 |         82        0.82       80.18
         10 |        115        1.15       81.33
         11 |         87        0.87       82.20
         12 |         84        0.84       83.04
         13 |        104        1.04       84.08
         14 |        122        1.22       85.30
         15 |        112        1.12       86.42
         16 |        131        1.31       87.73
         17 |         99        0.99       88.72
         18 |        119        1.19       89.91
         19 |        110        1.10       91.01
         20 |        123        1.23       92.24
         21 |         99        0.99       93.23
         22 |         79        0.79       94.02
         23 |         67        0.67       94.69
         24 |         69        0.69       95.38
         25 |         70        0.70       96.08
         26 |         52        0.52       96.60
         27 |         50        0.50       97.10
         28 |         50        0.50       97.60
         29 |         34        0.34       97.94
         30 |         35        0.35       98.29
         31 |         26        0.26       98.55
         32 |         23        0.23       98.78
         33 |         21        0.21       98.99
         34 |         18        0.18       99.17
         35 |         16        0.16       99.33
         36 |         14        0.14       99.47
         37 |          7        0.07       99.54
         38 |          4        0.04       99.58
         39 |          6        0.06       99.64
         40 |          7        0.07       99.71
         41 |          6        0.06       99.77
         42 |          3        0.03       99.80
         43 |          1        0.01       99.81
         44 |          1        0.01       99.82
         45 |          2        0.02       99.84
         46 |          2        0.02       99.86
         47 |          1        0.01       99.87
         48 |          2        0.02       99.89
         50 |          1        0.01       99.90
         52 |          1        0.01       99.91
         53 |          3        0.03       99.94
         54 |          1        0.01       99.95
         60 |          2        0.02       99.97
         64 |          2        0.02       99.99
         65 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 22 Oct 2016