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

         p2 |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      7,569       75.69       75.69
          1 |         40        0.40       76.09
          2 |         68        0.68       76.77
          3 |         52        0.52       77.29
          4 |         50        0.50       77.79
          5 |         56        0.56       78.35
          6 |         69        0.69       79.04
          7 |         67        0.67       79.71
          8 |         78        0.78       80.49
          9 |         84        0.84       81.33
         10 |         95        0.95       82.28
         11 |        102        1.02       83.30
         12 |        111        1.11       84.41
         13 |        101        1.01       85.42
         14 |        111        1.11       86.53
         15 |        107        1.07       87.60
         16 |         92        0.92       88.52
         17 |        108        1.08       89.60
         18 |         99        0.99       90.59
         19 |         84        0.84       91.43
         20 |         88        0.88       92.31
         21 |        103        1.03       93.34
         22 |         94        0.94       94.28
         23 |         78        0.78       95.06
         24 |         60        0.60       95.66
         25 |         59        0.59       96.25
         26 |         64        0.64       96.89
         27 |         61        0.61       97.50
         28 |         47        0.47       97.97
         29 |         40        0.40       98.37
         30 |         31        0.31       98.68
         31 |         23        0.23       98.91
         32 |         18        0.18       99.09
         33 |         11        0.11       99.20
         34 |         14        0.14       99.34
         35 |         15        0.15       99.49
         36 |         18        0.18       99.67
         37 |          8        0.08       99.75
         38 |          5        0.05       99.80
         39 |          5        0.05       99.85
         40 |          5        0.05       99.90
         41 |          4        0.04       99.94
         42 |          1        0.01       99.95
         46 |          1        0.01       99.96
         49 |          2        0.02       99.98
         51 |          2        0.02      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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