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

         p7 |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      7,441       74.41       74.41
          1 |         34        0.34       74.75
          2 |         56        0.56       75.31
          3 |         43        0.43       75.74
          4 |         48        0.48       76.22
          5 |         62        0.62       76.84
          6 |         51        0.51       77.35
          7 |         67        0.67       78.02
          8 |         75        0.75       78.77
          9 |         67        0.67       79.44
         10 |         87        0.87       80.31
         11 |         91        0.91       81.22
         12 |         97        0.97       82.19
         13 |         99        0.99       83.18
         14 |        115        1.15       84.33
         15 |        127        1.27       85.60
         16 |        112        1.12       86.72
         17 |        115        1.15       87.87
         18 |        125        1.25       89.12
         19 |        117        1.17       90.29
         20 |        116        1.16       91.45
         21 |        109        1.09       92.54
         22 |         92        0.92       93.46
         23 |         94        0.94       94.40
         24 |         86        0.86       95.26
         25 |         82        0.82       96.08
         26 |         70        0.70       96.78
         27 |         50        0.50       97.28
         28 |         49        0.49       97.77
         29 |         34        0.34       98.11
         30 |         35        0.35       98.46
         31 |         27        0.27       98.73
         32 |         20        0.20       98.93
         33 |         18        0.18       99.11
         34 |         17        0.17       99.28
         35 |         13        0.13       99.41
         36 |         15        0.15       99.56
         37 |          8        0.08       99.64
         38 |          5        0.05       99.69
         39 |          4        0.04       99.73
         40 |          7        0.07       99.80
         42 |          3        0.03       99.83
         43 |          3        0.03       99.86
         44 |          6        0.06       99.92
         48 |          2        0.02       99.94
         50 |          1        0.01       99.95
         67 |          1        0.01       99.96
         68 |          1        0.01       99.97
         79 |          1        0.01       99.98
         94 |          2        0.02      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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