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

         p7 |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      7,449       74.49       74.49
          1 |         31        0.31       74.80
          2 |         63        0.63       75.43
          3 |         52        0.52       75.95
          4 |         64        0.64       76.59
          5 |         45        0.45       77.04
          6 |         69        0.69       77.73
          7 |         84        0.84       78.57
          8 |         90        0.90       79.47
          9 |         79        0.79       80.26
         10 |         85        0.85       81.11
         11 |         93        0.93       82.04
         12 |        111        1.11       83.15
         13 |         72        0.72       83.87
         14 |        114        1.14       85.01
         15 |        118        1.18       86.19
         16 |        123        1.23       87.42
         17 |        120        1.20       88.62
         18 |        112        1.12       89.74
         19 |        111        1.11       90.85
         20 |        118        1.18       92.03
         21 |         85        0.85       92.88
         22 |        106        1.06       93.94
         23 |         80        0.80       94.74
         24 |         81        0.81       95.55
         25 |         71        0.71       96.26
         26 |         54        0.54       96.80
         27 |         48        0.48       97.28
         28 |         44        0.44       97.72
         29 |         43        0.43       98.15
         30 |         24        0.24       98.39
         31 |         18        0.18       98.57
         32 |         21        0.21       98.78
         33 |         27        0.27       99.05
         34 |         22        0.22       99.27
         35 |         19        0.19       99.46
         36 |          6        0.06       99.52
         37 |         11        0.11       99.63
         38 |          4        0.04       99.67
         39 |          6        0.06       99.73
         40 |          3        0.03       99.76
         41 |          6        0.06       99.82
         42 |          2        0.02       99.84
         43 |          6        0.06       99.90
         45 |          3        0.03       99.93
         46 |          1        0.01       99.94
         49 |          1        0.01       99.95
         50 |          1        0.01       99.96
         51 |          1        0.01       99.97
         52 |          2        0.02       99.99
         55 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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