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

         p7 |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      7,617       76.17       76.17
          1 |         40        0.40       76.57
          2 |         66        0.66       77.23
          3 |         49        0.49       77.72
          4 |         60        0.60       78.32
          5 |         47        0.47       78.79
          6 |         64        0.64       79.43
          7 |         67        0.67       80.10
          8 |         78        0.78       80.88
          9 |         86        0.86       81.74
         10 |         95        0.95       82.69
         11 |         86        0.86       83.55
         12 |        110        1.10       84.65
         13 |        104        1.04       85.69
         14 |        118        1.18       86.87
         15 |        107        1.07       87.94
         16 |        106        1.06       89.00
         17 |         91        0.91       89.91
         18 |         99        0.99       90.90
         19 |         86        0.86       91.76
         20 |         84        0.84       92.60
         21 |         98        0.98       93.58
         22 |         96        0.96       94.54
         23 |         71        0.71       95.25
         24 |         66        0.66       95.91
         25 |         62        0.62       96.53
         26 |         56        0.56       97.09
         27 |         59        0.59       97.68
         28 |         36        0.36       98.04
         29 |         33        0.33       98.37
         30 |         25        0.25       98.62
         31 |         23        0.23       98.85
         32 |         21        0.21       99.06
         33 |         14        0.14       99.20
         34 |         13        0.13       99.33
         35 |         13        0.13       99.46
         36 |         14        0.14       99.60
         37 |          8        0.08       99.68
         38 |          4        0.04       99.72
         39 |          7        0.07       99.79
         40 |          1        0.01       99.80
         41 |          3        0.03       99.83
         42 |          2        0.02       99.85
         43 |          1        0.01       99.86
         44 |          2        0.02       99.88
         45 |          3        0.03       99.91
         46 |          2        0.02       99.93
         49 |          3        0.03       99.96
         50 |          1        0.01       99.97
         51 |          1        0.01       99.98
         54 |          1        0.01       99.99
         60 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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