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

         p3 |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      7,344       73.44       73.44
          1 |         52        0.52       73.96
          2 |         52        0.52       74.48
          3 |         64        0.64       75.12
          4 |         75        0.75       75.87
          5 |         77        0.77       76.64
          6 |         80        0.80       77.44
          7 |         74        0.74       78.18
          8 |         68        0.68       78.86
          9 |         86        0.86       79.72
         10 |        112        1.12       80.84
         11 |        101        1.01       81.85
         12 |        114        1.14       82.99
         13 |        108        1.08       84.07
         14 |        112        1.12       85.19
         15 |        129        1.29       86.48
         16 |        136        1.36       87.84
         17 |        104        1.04       88.88
         18 |        102        1.02       89.90
         19 |        100        1.00       90.90
         20 |        104        1.04       91.94
         21 |        114        1.14       93.08
         22 |        107        1.07       94.15
         23 |         84        0.84       94.99
         24 |         75        0.75       95.74
         25 |         78        0.78       96.52
         26 |         59        0.59       97.11
         27 |         56        0.56       97.67
         28 |         32        0.32       97.99
         29 |         31        0.31       98.30
         30 |         26        0.26       98.56
         31 |         27        0.27       98.83
         32 |         16        0.16       98.99
         33 |         13        0.13       99.12
         34 |         14        0.14       99.26
         35 |         16        0.16       99.42
         36 |         10        0.10       99.52
         37 |          7        0.07       99.59
         38 |         10        0.10       99.69
         39 |          5        0.05       99.74
         40 |          3        0.03       99.77
         41 |          5        0.05       99.82
         42 |          3        0.03       99.85
         43 |          4        0.04       99.89
         44 |          1        0.01       99.90
         45 |          2        0.02       99.92
         46 |          1        0.01       99.93
         47 |          1        0.01       99.94
         49 |          1        0.01       99.95
         50 |          1        0.01       99.96
         52 |          1        0.01       99.97
         54 |          1        0.01       99.98
         57 |          1        0.01       99.99
         61 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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