Frequencies for first 10,000 rows of p3 variable in miper dataset :

         p3 |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      7,477       74.77       74.77
          1 |         41        0.41       75.18
          2 |         80        0.80       75.98
          3 |         59        0.59       76.57
          4 |         63        0.63       77.20
          5 |         64        0.64       77.84
          6 |         69        0.69       78.53
          7 |         85        0.85       79.38
          8 |         86        0.86       80.24
          9 |         85        0.85       81.09
         10 |         90        0.90       81.99
         11 |        118        1.18       83.17
         12 |         92        0.92       84.09
         13 |         99        0.99       85.08
         14 |        108        1.08       86.16
         15 |         92        0.92       87.08
         16 |         90        0.90       87.98
         17 |        123        1.23       89.21
         18 |        102        1.02       90.23
         19 |         96        0.96       91.19
         20 |        101        1.01       92.20
         21 |         95        0.95       93.15
         22 |         91        0.91       94.06
         23 |         74        0.74       94.80
         24 |         65        0.65       95.45
         25 |         89        0.89       96.34
         26 |         63        0.63       96.97
         27 |         52        0.52       97.49
         28 |         46        0.46       97.95
         29 |         36        0.36       98.31
         30 |         37        0.37       98.68
         31 |         21        0.21       98.89
         32 |         23        0.23       99.12
         33 |         16        0.16       99.28
         34 |         10        0.10       99.38
         35 |         17        0.17       99.55
         36 |          7        0.07       99.62
         37 |          6        0.06       99.68
         38 |          1        0.01       99.69
         39 |          6        0.06       99.75
         40 |          4        0.04       99.79
         41 |          1        0.01       99.80
         42 |          4        0.04       99.84
         43 |          5        0.05       99.89
         44 |          2        0.02       99.91
         48 |          3        0.03       99.94
         49 |          1        0.01       99.95
         50 |          2        0.02       99.97
         54 |          1        0.01       99.98
         60 |          2        0.02      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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