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

         p7 |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      7,541       75.41       75.41
          1 |         46        0.46       75.87
          2 |         56        0.56       76.43
          3 |         43        0.43       76.86
          4 |         48        0.48       77.34
          5 |         46        0.46       77.80
          6 |         44        0.44       78.24
          7 |         61        0.61       78.85
          8 |         69        0.69       79.54
          9 |         73        0.73       80.27
         10 |        118        1.18       81.45
         11 |         88        0.88       82.33
         12 |         88        0.88       83.21
         13 |        109        1.09       84.30
         14 |        127        1.27       85.57
         15 |        109        1.09       86.66
         16 |        137        1.37       88.03
         17 |        101        1.01       89.04
         18 |        103        1.03       90.07
         19 |        106        1.06       91.13
         20 |        123        1.23       92.36
         21 |        100        1.00       93.36
         22 |         79        0.79       94.15
         23 |         69        0.69       94.84
         24 |         76        0.76       95.60
         25 |         62        0.62       96.22
         26 |         55        0.55       96.77
         27 |         48        0.48       97.25
         28 |         48        0.48       97.73
         29 |         26        0.26       97.99
         30 |         35        0.35       98.34
         31 |         28        0.28       98.62
         32 |         29        0.29       98.91
         33 |         15        0.15       99.06
         34 |         13        0.13       99.19
         35 |         17        0.17       99.36
         36 |          8        0.08       99.44
         37 |          7        0.07       99.51
         38 |          6        0.06       99.57
         39 |          8        0.08       99.65
         40 |          8        0.08       99.73
         41 |          3        0.03       99.76
         42 |          2        0.02       99.78
         43 |          3        0.03       99.81
         44 |          4        0.04       99.85
         45 |          2        0.02       99.87
         46 |          2        0.02       99.89
         47 |          1        0.01       99.90
         48 |          2        0.02       99.92
         49 |          1        0.01       99.93
         50 |          1        0.01       99.94
         51 |          1        0.01       99.95
         53 |          3        0.03       99.98
         55 |          1        0.01       99.99
         65 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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