Frequencies for first 10,000 rows of p3 variable in miper dataset :

         p3 |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      7,522       75.22       75.22
          1 |         35        0.35       75.57
          2 |         70        0.70       76.27
          3 |         56        0.56       76.83
          4 |         56        0.56       77.39
          5 |         53        0.53       77.92
          6 |         73        0.73       78.65
          7 |         69        0.69       79.34
          8 |         78        0.78       80.12
          9 |         91        0.91       81.03
         10 |         87        0.87       81.90
         11 |        100        1.00       82.90
         12 |        106        1.06       83.96
         13 |         94        0.94       84.90
         14 |        111        1.11       86.01
         15 |        110        1.10       87.11
         16 |        126        1.26       88.37
         17 |        119        1.19       89.56
         18 |        124        1.24       90.80
         19 |         87        0.87       91.67
         20 |         95        0.95       92.62
         21 |         90        0.90       93.52
         22 |         88        0.88       94.40
         23 |         69        0.69       95.09
         24 |         63        0.63       95.72
         25 |         67        0.67       96.39
         26 |         46        0.46       96.85
         27 |         54        0.54       97.39
         28 |         43        0.43       97.82
         29 |         34        0.34       98.16
         30 |         30        0.30       98.46
         31 |         26        0.26       98.72
         32 |         21        0.21       98.93
         33 |         11        0.11       99.04
         34 |         16        0.16       99.20
         35 |          7        0.07       99.27
         36 |          6        0.06       99.33
         37 |         12        0.12       99.45
         38 |         10        0.10       99.55
         39 |          7        0.07       99.62
         40 |          7        0.07       99.69
         41 |          5        0.05       99.74
         42 |          7        0.07       99.81
         43 |          2        0.02       99.83
         45 |          2        0.02       99.85
         46 |          1        0.01       99.86
         47 |          3        0.03       99.89
         48 |          4        0.04       99.93
         49 |          1        0.01       99.94
         50 |          2        0.02       99.96
         53 |          1        0.01       99.97
         55 |          1        0.01       99.98
         58 |          1        0.01       99.99
         70 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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