Frequencies for first 10,000 rows of p1 variable in miper dataset :

         p1 |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      7,418       74.18       74.18
          1 |         45        0.45       74.63
          2 |         60        0.60       75.23
          3 |         60        0.60       75.83
          4 |         55        0.55       76.38
          5 |         70        0.70       77.08
          6 |         70        0.70       77.78
          7 |         80        0.80       78.58
          8 |        103        1.03       79.61
          9 |         95        0.95       80.56
         10 |         98        0.98       81.54
         11 |         91        0.91       82.45
         12 |         90        0.90       83.35
         13 |         94        0.94       84.29
         14 |        131        1.31       85.60
         15 |        104        1.04       86.64
         16 |        124        1.24       87.88
         17 |        104        1.04       88.92
         18 |        116        1.16       90.08
         19 |        120        1.20       91.28
         20 |        106        1.06       92.34
         21 |         99        0.99       93.33
         22 |         86        0.86       94.19
         23 |         83        0.83       95.02
         24 |         74        0.74       95.76
         25 |         54        0.54       96.30
         26 |         59        0.59       96.89
         27 |         49        0.49       97.38
         28 |         47        0.47       97.85
         29 |         34        0.34       98.19
         30 |         26        0.26       98.45
         31 |         23        0.23       98.68
         32 |         21        0.21       98.89
         33 |         20        0.20       99.09
         34 |         14        0.14       99.23
         35 |          8        0.08       99.31
         36 |         11        0.11       99.42
         37 |         10        0.10       99.52
         38 |         10        0.10       99.62
         39 |          4        0.04       99.66
         40 |         10        0.10       99.76
         41 |          3        0.03       99.79
         42 |          4        0.04       99.83
         43 |          2        0.02       99.85
         44 |          1        0.01       99.86
         45 |          3        0.03       99.89
         46 |          1        0.01       99.90
         47 |          1        0.01       99.91
         48 |          2        0.02       99.93
         49 |          1        0.01       99.94
         51 |          1        0.01       99.95
         58 |          1        0.01       99.96
         61 |          1        0.01       99.97
         65 |          1        0.01       99.98
         68 |          1        0.01       99.99
         69 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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