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

         p7 |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      7,458       74.58       74.58
          1 |         39        0.39       74.97
          2 |         57        0.57       75.54
          3 |         64        0.64       76.18
          4 |         51        0.51       76.69
          5 |         63        0.63       77.32
          6 |         72        0.72       78.04
          7 |         73        0.73       78.77
          8 |         99        0.99       79.76
          9 |         94        0.94       80.70
         10 |         84        0.84       81.54
         11 |        108        1.08       82.62
         12 |        107        1.07       83.69
         13 |         97        0.97       84.66
         14 |        120        1.20       85.86
         15 |        114        1.14       87.00
         16 |        110        1.10       88.10
         17 |         93        0.93       89.03
         18 |        111        1.11       90.14
         19 |        107        1.07       91.21
         20 |        101        1.01       92.22
         21 |         91        0.91       93.13
         22 |         87        0.87       94.00
         23 |         88        0.88       94.88
         24 |         68        0.68       95.56
         25 |         69        0.69       96.25
         26 |         54        0.54       96.79
         27 |         53        0.53       97.32
         28 |         39        0.39       97.71
         29 |         30        0.30       98.01
         30 |         32        0.32       98.33
         31 |         25        0.25       98.58
         32 |         21        0.21       98.79
         33 |         22        0.22       99.01
         34 |         12        0.12       99.13
         35 |         15        0.15       99.28
         36 |         16        0.16       99.44
         37 |          4        0.04       99.48
         38 |          6        0.06       99.54
         39 |          9        0.09       99.63
         40 |          8        0.08       99.71
         41 |          7        0.07       99.78
         43 |          4        0.04       99.82
         44 |          3        0.03       99.85
         45 |          4        0.04       99.89
         46 |          2        0.02       99.91
         47 |          4        0.04       99.95
         48 |          1        0.01       99.96
         49 |          2        0.02       99.98
         50 |          1        0.01       99.99
         65 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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