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

         p3 |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      7,418       74.18       74.18
          1 |         27        0.27       74.45
          2 |         68        0.68       75.13
          3 |         63        0.63       75.76
          4 |         51        0.51       76.27
          5 |         52        0.52       76.79
          6 |         81        0.81       77.60
          7 |         65        0.65       78.25
          8 |         95        0.95       79.20
          9 |         77        0.77       79.97
         10 |        104        1.04       81.01
         11 |        100        1.00       82.01
         12 |        103        1.03       83.04
         13 |        113        1.13       84.17
         14 |        114        1.14       85.31
         15 |        109        1.09       86.40
         16 |        113        1.13       87.53
         17 |        122        1.22       88.75
         18 |        111        1.11       89.86
         19 |         97        0.97       90.83
         20 |        103        1.03       91.86
         21 |        122        1.22       93.08
         22 |         90        0.90       93.98
         23 |         95        0.95       94.93
         24 |         60        0.60       95.53
         25 |         69        0.69       96.22
         26 |         43        0.43       96.65
         27 |         70        0.70       97.35
         28 |         41        0.41       97.76
         29 |         33        0.33       98.09
         30 |         39        0.39       98.48
         31 |         21        0.21       98.69
         32 |         18        0.18       98.87
         33 |         20        0.20       99.07
         34 |         21        0.21       99.28
         35 |         12        0.12       99.40
         36 |          8        0.08       99.48
         37 |          8        0.08       99.56
         38 |         13        0.13       99.69
         39 |          6        0.06       99.75
         40 |          6        0.06       99.81
         41 |          1        0.01       99.82
         42 |          3        0.03       99.85
         43 |          3        0.03       99.88
         44 |          3        0.03       99.91
         45 |          1        0.01       99.92
         51 |          2        0.02       99.94
         52 |          1        0.01       99.95
         55 |          1        0.01       99.96
         58 |          1        0.01       99.97
         60 |          1        0.01       99.98
         71 |          1        0.01       99.99
         72 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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