Frequencies for first 10,000 rows of p7 variable in miper dataset :

         p7 |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      7,365       73.65       73.65
          1 |         48        0.48       74.13
          2 |         51        0.51       74.64
          3 |         64        0.64       75.28
          4 |         78        0.78       76.06
          5 |         78        0.78       76.84
          6 |         80        0.80       77.64
          7 |         67        0.67       78.31
          8 |         80        0.80       79.11
          9 |         93        0.93       80.04
         10 |        111        1.11       81.15
         11 |        107        1.07       82.22
         12 |        120        1.20       83.42
         13 |         93        0.93       84.35
         14 |        100        1.00       85.35
         15 |        124        1.24       86.59
         16 |        127        1.27       87.86
         17 |         94        0.94       88.80
         18 |        110        1.10       89.90
         19 |        111        1.11       91.01
         20 |        101        1.01       92.02
         21 |        125        1.25       93.27
         22 |        101        1.01       94.28
         23 |         82        0.82       95.10
         24 |         67        0.67       95.77
         25 |         74        0.74       96.51
         26 |         62        0.62       97.13
         27 |         55        0.55       97.68
         28 |         31        0.31       97.99
         29 |         29        0.29       98.28
         30 |         28        0.28       98.56
         31 |         27        0.27       98.83
         32 |         16        0.16       98.99
         33 |         12        0.12       99.11
         34 |         16        0.16       99.27
         35 |         14        0.14       99.41
         36 |         11        0.11       99.52
         37 |          6        0.06       99.58
         38 |          9        0.09       99.67
         39 |          9        0.09       99.76
         40 |          4        0.04       99.80
         41 |          3        0.03       99.83
         42 |          4        0.04       99.87
         43 |          2        0.02       99.89
         45 |          2        0.02       99.91
         46 |          1        0.01       99.92
         47 |          1        0.01       99.93
         48 |          1        0.01       99.94
         49 |          1        0.01       99.95
         52 |          1        0.01       99.96
         54 |          1        0.01       99.97
         55 |          1        0.01       99.98
         57 |          1        0.01       99.99
         61 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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