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

         p2 |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      7,520       75.20       75.20
          1 |         36        0.36       75.56
          2 |         59        0.59       76.15
          3 |         44        0.44       76.59
          4 |         61        0.61       77.20
          5 |         58        0.58       77.78
          6 |         63        0.63       78.41
          7 |         59        0.59       79.00
          8 |         67        0.67       79.67
          9 |         81        0.81       80.48
         10 |         75        0.75       81.23
         11 |         87        0.87       82.10
         12 |         83        0.83       82.93
         13 |         80        0.80       83.73
         14 |        107        1.07       84.80
         15 |         95        0.95       85.75
         16 |        128        1.28       87.03
         17 |        110        1.10       88.13
         18 |        119        1.19       89.32
         19 |        119        1.19       90.51
         20 |        102        1.02       91.53
         21 |        111        1.11       92.64
         22 |         88        0.88       93.52
         23 |         91        0.91       94.43
         24 |         71        0.71       95.14
         25 |         73        0.73       95.87
         26 |         54        0.54       96.41
         27 |         52        0.52       96.93
         28 |         59        0.59       97.52
         29 |         43        0.43       97.95
         30 |         34        0.34       98.29
         31 |         31        0.31       98.60
         32 |         26        0.26       98.86
         33 |         19        0.19       99.05
         34 |         23        0.23       99.28
         35 |         12        0.12       99.40
         36 |         14        0.14       99.54
         37 |          7        0.07       99.61
         38 |          5        0.05       99.66
         39 |          7        0.07       99.73
         40 |          4        0.04       99.77
         41 |          1        0.01       99.78
         42 |          4        0.04       99.82
         44 |          2        0.02       99.84
         45 |          4        0.04       99.88
         46 |          2        0.02       99.90
         47 |          4        0.04       99.94
         51 |          1        0.01       99.95
         54 |          1        0.01       99.96
         58 |          1        0.01       99.97
         60 |          1        0.01       99.98
         62 |          1        0.01       99.99
         66 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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