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

         p7 |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      6,494       64.94       64.94
          1 |         30        0.30       65.24
          2 |         73        0.73       65.97
          3 |         75        0.75       66.72
          4 |         74        0.74       67.46
          5 |         88        0.88       68.34
          6 |         89        0.89       69.23
          7 |         99        0.99       70.22
          8 |        102        1.02       71.24
          9 |        122        1.22       72.46
         10 |        118        1.18       73.64
         11 |        144        1.44       75.08
         12 |        167        1.67       76.75
         13 |        177        1.77       78.52
         14 |        158        1.58       80.10
         15 |        179        1.79       81.89
         16 |        175        1.75       83.64
         17 |        169        1.69       85.33
         18 |        175        1.75       87.08
         19 |        139        1.39       88.47
         20 |        155        1.55       90.02
         21 |        140        1.40       91.42
         22 |        122        1.22       92.64
         23 |        117        1.17       93.81
         24 |         83        0.83       94.64
         25 |         73        0.73       95.37
         26 |         73        0.73       96.10
         27 |         61        0.61       96.71
         28 |         51        0.51       97.22
         29 |         44        0.44       97.66
         30 |         51        0.51       98.17
         31 |         39        0.39       98.56
         32 |         27        0.27       98.83
         33 |         30        0.30       99.13
         34 |         19        0.19       99.32
         35 |         10        0.10       99.42
         36 |         10        0.10       99.52
         37 |         10        0.10       99.62
         38 |         10        0.10       99.72
         39 |          3        0.03       99.75
         40 |          7        0.07       99.82
         41 |          5        0.05       99.87
         42 |          3        0.03       99.90
         43 |          1        0.01       99.91
         45 |          4        0.04       99.95
         46 |          1        0.01       99.96
         47 |          1        0.01       99.97
         57 |          1        0.01       99.98
         59 |          1        0.01       99.99
         62 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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