Frequencies for first 10,000 rows of p2 variable in miper dataset :

         p2 |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      7,373       73.73       73.73
          1 |         49        0.49       74.22
          2 |         51        0.51       74.73
          3 |         65        0.65       75.38
          4 |         72        0.72       76.10
          5 |         78        0.78       76.88
          6 |         73        0.73       77.61
          7 |         72        0.72       78.33
          8 |         75        0.75       79.08
          9 |         83        0.83       79.91
         10 |        102        1.02       80.93
         11 |        100        1.00       81.93
         12 |        105        1.05       82.98
         13 |        112        1.12       84.10
         14 |        100        1.00       85.10
         15 |        128        1.28       86.38
         16 |        125        1.25       87.63
         17 |         96        0.96       88.59
         18 |        104        1.04       89.63
         19 |        114        1.14       90.77
         20 |        106        1.06       91.83
         21 |        114        1.14       92.97
         22 |        106        1.06       94.03
         23 |         90        0.90       94.93
         24 |         68        0.68       95.61
         25 |         80        0.80       96.41
         26 |         63        0.63       97.04
         27 |         57        0.57       97.61
         28 |         35        0.35       97.96
         29 |         35        0.35       98.31
         30 |         28        0.28       98.59
         31 |         23        0.23       98.82
         32 |         16        0.16       98.98
         33 |         15        0.15       99.13
         34 |         13        0.13       99.26
         35 |         14        0.14       99.40
         36 |         10        0.10       99.50
         37 |          7        0.07       99.57
         38 |         13        0.13       99.70
         39 |          6        0.06       99.76
         40 |          2        0.02       99.78
         41 |          4        0.04       99.82
         42 |          3        0.03       99.85
         43 |          1        0.01       99.86
         44 |          1        0.01       99.87
         45 |          4        0.04       99.91
         46 |          1        0.01       99.92
         47 |          1        0.01       99.93
         48 |          2        0.02       99.95
         49 |          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