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

         p7 |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      7,491       74.91       74.91
          1 |         45        0.45       75.36
          2 |         59        0.59       75.95
          3 |         37        0.37       76.32
          4 |         43        0.43       76.75
          5 |         54        0.54       77.29
          6 |         52        0.52       77.81
          7 |         59        0.59       78.40
          8 |         64        0.64       79.04
          9 |         77        0.77       79.81
         10 |         93        0.93       80.74
         11 |         96        0.96       81.70
         12 |         93        0.93       82.63
         13 |        101        1.01       83.64
         14 |        109        1.09       84.73
         15 |        120        1.20       85.93
         16 |        119        1.19       87.12
         17 |        107        1.07       88.19
         18 |         99        0.99       89.18
         19 |        116        1.16       90.34
         20 |        103        1.03       91.37
         21 |        109        1.09       92.46
         22 |        107        1.07       93.53
         23 |         88        0.88       94.41
         24 |         83        0.83       95.24
         25 |         68        0.68       95.92
         26 |         65        0.65       96.57
         27 |         46        0.46       97.03
         28 |         41        0.41       97.44
         29 |         32        0.32       97.76
         30 |         45        0.45       98.21
         31 |         35        0.35       98.56
         32 |         18        0.18       98.74
         33 |         19        0.19       98.93
         34 |         17        0.17       99.10
         35 |         14        0.14       99.24
         36 |         14        0.14       99.38
         37 |          7        0.07       99.45
         38 |          8        0.08       99.53
         39 |          6        0.06       99.59
         40 |          9        0.09       99.68
         41 |          8        0.08       99.76
         42 |          6        0.06       99.82
         43 |          3        0.03       99.85
         44 |          2        0.02       99.87
         45 |          2        0.02       99.89
         46 |          1        0.01       99.90
         47 |          1        0.01       99.91
         50 |          1        0.01       99.92
         51 |          2        0.02       99.94
         52 |          1        0.01       99.95
         54 |          1        0.01       99.96
         60 |          1        0.01       99.97
         63 |          1        0.01       99.98
         64 |          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