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

         p3 |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      7,455       74.55       74.55
          1 |         37        0.37       74.92
          2 |         46        0.46       75.38
          3 |         58        0.58       75.96
          4 |         67        0.67       76.63
          5 |         68        0.68       77.31
          6 |         69        0.69       78.00
          7 |         62        0.62       78.62
          8 |         76        0.76       79.38
          9 |         78        0.78       80.16
         10 |         78        0.78       80.94
         11 |         88        0.88       81.82
         12 |         96        0.96       82.78
         13 |         96        0.96       83.74
         14 |        108        1.08       84.82
         15 |        129        1.29       86.11
         16 |        108        1.08       87.19
         17 |        117        1.17       88.36
         18 |        117        1.17       89.53
         19 |         94        0.94       90.47
         20 |         84        0.84       91.31
         21 |        103        1.03       92.34
         22 |         88        0.88       93.22
         23 |         85        0.85       94.07
         24 |         90        0.90       94.97
         25 |         72        0.72       95.69
         26 |         53        0.53       96.22
         27 |         69        0.69       96.91
         28 |         47        0.47       97.38
         29 |         33        0.33       97.71
         30 |         29        0.29       98.00
         31 |         30        0.30       98.30
         32 |         33        0.33       98.63
         33 |         18        0.18       98.81
         34 |         20        0.20       99.01
         35 |         19        0.19       99.20
         36 |         13        0.13       99.33
         37 |         16        0.16       99.49
         38 |         12        0.12       99.61
         39 |          6        0.06       99.67
         40 |          8        0.08       99.75
         41 |          3        0.03       99.78
         42 |          2        0.02       99.80
         43 |          4        0.04       99.84
         44 |          3        0.03       99.87
         45 |          2        0.02       99.89
         46 |          2        0.02       99.91
         47 |          1        0.01       99.92
         48 |          1        0.01       99.93
         49 |          1        0.01       99.94
         61 |          1        0.01       99.95
         63 |          1        0.01       99.96
         64 |          2        0.02       99.98
         73 |          1        0.01       99.99
         76 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 22 Oct 2016