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

         p3 |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      7,298       72.98       72.98
          1 |         43        0.43       73.41
          2 |         54        0.54       73.95
          3 |         57        0.57       74.52
          4 |         59        0.59       75.11
          5 |         63        0.63       75.74
          6 |         72        0.72       76.46
          7 |         77        0.77       77.23
          8 |         89        0.89       78.12
          9 |         86        0.86       78.98
         10 |         86        0.86       79.84
         11 |        108        1.08       80.92
         12 |        103        1.03       81.95
         13 |        116        1.16       83.11
         14 |        113        1.13       84.24
         15 |        134        1.34       85.58
         16 |        131        1.31       86.89
         17 |        120        1.20       88.09
         18 |        110        1.10       89.19
         19 |        137        1.37       90.56
         20 |        101        1.01       91.57
         21 |         95        0.95       92.52
         22 |        118        1.18       93.70
         23 |        101        1.01       94.71
         24 |         77        0.77       95.48
         25 |         66        0.66       96.14
         26 |         66        0.66       96.80
         27 |         53        0.53       97.33
         28 |         62        0.62       97.95
         29 |         27        0.27       98.22
         30 |         25        0.25       98.47
         31 |         30        0.30       98.77
         32 |         18        0.18       98.95
         33 |         16        0.16       99.11
         34 |         11        0.11       99.22
         35 |         11        0.11       99.33
         36 |         13        0.13       99.46
         37 |          7        0.07       99.53
         38 |         13        0.13       99.66
         39 |          4        0.04       99.70
         40 |          4        0.04       99.74
         41 |          4        0.04       99.78
         42 |          3        0.03       99.81
         43 |          4        0.04       99.85
         44 |          3        0.03       99.88
         45 |          3        0.03       99.91
         46 |          1        0.01       99.92
         47 |          1        0.01       99.93
         48 |          2        0.02       99.95
         50 |          1        0.01       99.96
         51 |          1        0.01       99.97
         52 |          1        0.01       99.98
         55 |          1        0.01       99.99
         78 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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