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

         p1 |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      7,307       73.07       73.07
          1 |         44        0.44       73.51
          2 |         52        0.52       74.03
          3 |         59        0.59       74.62
          4 |         54        0.54       75.16
          5 |         72        0.72       75.88
          6 |         61        0.61       76.49
          7 |         80        0.80       77.29
          8 |         78        0.78       78.07
          9 |         79        0.79       78.86
         10 |         88        0.88       79.74
         11 |        118        1.18       80.92
         12 |        101        1.01       81.93
         13 |        119        1.19       83.12
         14 |        106        1.06       84.18
         15 |        125        1.25       85.43
         16 |        124        1.24       86.67
         17 |        106        1.06       87.73
         18 |        118        1.18       88.91
         19 |        133        1.33       90.24
         20 |         98        0.98       91.22
         21 |        104        1.04       92.26
         22 |        129        1.29       93.55
         23 |        103        1.03       94.58
         24 |         82        0.82       95.40
         25 |         70        0.70       96.10
         26 |         62        0.62       96.72
         27 |         54        0.54       97.26
         28 |         68        0.68       97.94
         29 |         30        0.30       98.24
         30 |         33        0.33       98.57
         31 |         30        0.30       98.87
         32 |         18        0.18       99.05
         33 |         10        0.10       99.15
         34 |         10        0.10       99.25
         35 |         10        0.10       99.35
         36 |         13        0.13       99.48
         37 |          8        0.08       99.56
         38 |         11        0.11       99.67
         39 |          4        0.04       99.71
         40 |          5        0.05       99.76
         41 |          3        0.03       99.79
         42 |          3        0.03       99.82
         43 |          3        0.03       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