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

         p2 |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      7,464       74.64       74.64
          1 |         34        0.34       74.98
          2 |         69        0.69       75.67
          3 |         56        0.56       76.23
          4 |         56        0.56       76.79
          5 |         71        0.71       77.50
          6 |         68        0.68       78.18
          7 |         70        0.70       78.88
          8 |         96        0.96       79.84
          9 |         98        0.98       80.82
         10 |         99        0.99       81.81
         11 |        116        1.16       82.97
         12 |        104        1.04       84.01
         13 |         96        0.96       84.97
         14 |        106        1.06       86.03
         15 |        111        1.11       87.14
         16 |        100        1.00       88.14
         17 |        111        1.11       89.25
         18 |        117        1.17       90.42
         19 |        112        1.12       91.54
         20 |        101        1.01       92.55
         21 |        103        1.03       93.58
         22 |         87        0.87       94.45
         23 |         76        0.76       95.21
         24 |         62        0.62       95.83
         25 |         59        0.59       96.42
         26 |         57        0.57       96.99
         27 |         50        0.50       97.49
         28 |         35        0.35       97.84
         29 |         34        0.34       98.18
         30 |         35        0.35       98.53
         31 |         21        0.21       98.74
         32 |         31        0.31       99.05
         33 |         26        0.26       99.31
         34 |         15        0.15       99.46
         35 |         14        0.14       99.60
         36 |         10        0.10       99.70
         37 |          5        0.05       99.75
         38 |          5        0.05       99.80
         39 |          5        0.05       99.85
         40 |          2        0.02       99.87
         41 |          4        0.04       99.91
         42 |          2        0.02       99.93
         43 |          1        0.01       99.94
         44 |          2        0.02       99.96
         45 |          1        0.01       99.97
         46 |          2        0.02       99.99
         47 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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