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

         p7 |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      7,326       73.26       73.26
          1 |         34        0.34       73.60
          2 |         64        0.64       74.24
          3 |         62        0.62       74.86
          4 |         53        0.53       75.39
          5 |         55        0.55       75.94
          6 |         82        0.82       76.76
          7 |         76        0.76       77.52
          8 |         73        0.73       78.25
          9 |         91        0.91       79.16
         10 |        107        1.07       80.23
         11 |        100        1.00       81.23
         12 |        134        1.34       82.57
         13 |        116        1.16       83.73
         14 |        123        1.23       84.96
         15 |        118        1.18       86.14
         16 |        111        1.11       87.25
         17 |        116        1.16       88.41
         18 |        135        1.35       89.76
         19 |        100        1.00       90.76
         20 |        109        1.09       91.85
         21 |        107        1.07       92.92
         22 |         87        0.87       93.79
         23 |         82        0.82       94.61
         24 |         74        0.74       95.35
         25 |         68        0.68       96.03
         26 |         57        0.57       96.60
         27 |         51        0.51       97.11
         28 |         36        0.36       97.47
         29 |         47        0.47       97.94
         30 |         44        0.44       98.38
         31 |         27        0.27       98.65
         32 |         19        0.19       98.84
         33 |         17        0.17       99.01
         34 |         25        0.25       99.26
         35 |         14        0.14       99.40
         36 |         13        0.13       99.53
         37 |          3        0.03       99.56
         38 |          8        0.08       99.64
         39 |          6        0.06       99.70
         40 |          6        0.06       99.76
         41 |          5        0.05       99.81
         42 |          2        0.02       99.83
         43 |          7        0.07       99.90
         45 |          3        0.03       99.93
         46 |          1        0.01       99.94
         49 |          2        0.02       99.96
         55 |          1        0.01       99.97
         57 |          1        0.01       99.98
         60 |          1        0.01       99.99
         63 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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