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

         p7 |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      7,380       73.80       73.80
          1 |         32        0.32       74.12
          2 |         59        0.59       74.71
          3 |         52        0.52       75.23
          4 |         51        0.51       75.74
          5 |         46        0.46       76.20
          6 |         68        0.68       76.88
          7 |         88        0.88       77.76
          8 |         86        0.86       78.62
          9 |         94        0.94       79.56
         10 |         69        0.69       80.25
         11 |        103        1.03       81.28
         12 |         99        0.99       82.27
         13 |        107        1.07       83.34
         14 |        129        1.29       84.63
         15 |        114        1.14       85.77
         16 |        117        1.17       86.94
         17 |        110        1.10       88.04
         18 |        113        1.13       89.17
         19 |        113        1.13       90.30
         20 |         98        0.98       91.28
         21 |        116        1.16       92.44
         22 |         81        0.81       93.25
         23 |         82        0.82       94.07
         24 |         90        0.90       94.97
         25 |         62        0.62       95.59
         26 |         71        0.71       96.30
         27 |         57        0.57       96.87
         28 |         50        0.50       97.37
         29 |         38        0.38       97.75
         30 |         31        0.31       98.06
         31 |         33        0.33       98.39
         32 |         23        0.23       98.62
         33 |         24        0.24       98.86
         34 |         23        0.23       99.09
         35 |         17        0.17       99.26
         36 |          9        0.09       99.35
         37 |         14        0.14       99.49
         38 |         14        0.14       99.63
         39 |          7        0.07       99.70
         40 |          9        0.09       99.79
         41 |          5        0.05       99.84
         42 |          1        0.01       99.85
         43 |          4        0.04       99.89
         44 |          2        0.02       99.91
         45 |          2        0.02       99.93
         46 |          3        0.03       99.96
         53 |          1        0.01       99.97
         56 |          1        0.01       99.98
         64 |          1        0.01       99.99
         67 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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