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

         p3 |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      6,468       64.68       64.68
          1 |         32        0.32       65.00
          2 |         74        0.74       65.74
          3 |         80        0.80       66.54
          4 |         67        0.67       67.21
          5 |         85        0.85       68.06
          6 |         80        0.80       68.86
          7 |        101        1.01       69.87
          8 |        109        1.09       70.96
          9 |        127        1.27       72.23
         10 |        117        1.17       73.40
         11 |        156        1.56       74.96
         12 |        178        1.78       76.74
         13 |        167        1.67       78.41
         14 |        152        1.52       79.93
         15 |        177        1.77       81.70
         16 |        191        1.91       83.61
         17 |        161        1.61       85.22
         18 |        193        1.93       87.15
         19 |        149        1.49       88.64
         20 |        140        1.40       90.04
         21 |        140        1.40       91.44
         22 |        119        1.19       92.63
         23 |        103        1.03       93.66
         24 |         98        0.98       94.64
         25 |         71        0.71       95.35
         26 |         77        0.77       96.12
         27 |         64        0.64       96.76
         28 |         49        0.49       97.25
         29 |         43        0.43       97.68
         30 |         42        0.42       98.10
         31 |         48        0.48       98.58
         32 |         26        0.26       98.84
         33 |         29        0.29       99.13
         34 |         22        0.22       99.35
         35 |         12        0.12       99.47
         36 |         10        0.10       99.57
         37 |         11        0.11       99.68
         38 |          9        0.09       99.77
         39 |          4        0.04       99.81
         40 |          5        0.05       99.86
         41 |          5        0.05       99.91
         42 |          3        0.03       99.94
         43 |          1        0.01       99.95
         44 |          1        0.01       99.96
         45 |          2        0.02       99.98
         59 |          1        0.01       99.99
         62 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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