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

         p1 |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      7,489       74.89       74.89
          1 |         30        0.30       75.19
          2 |         68        0.68       75.87
          3 |         54        0.54       76.41
          4 |         60        0.60       77.01
          5 |         60        0.60       77.61
          6 |         77        0.77       78.38
          7 |         61        0.61       78.99
          8 |         91        0.91       79.90
          9 |         72        0.72       80.62
         10 |         97        0.97       81.59
         11 |         99        0.99       82.58
         12 |         90        0.90       83.48
         13 |        103        1.03       84.51
         14 |        122        1.22       85.73
         15 |        119        1.19       86.92
         16 |        118        1.18       88.10
         17 |        110        1.10       89.20
         18 |         97        0.97       90.17
         19 |        113        1.13       91.30
         20 |        107        1.07       92.37
         21 |         98        0.98       93.35
         22 |         86        0.86       94.21
         23 |         83        0.83       95.04
         24 |         63        0.63       95.67
         25 |         67        0.67       96.34
         26 |         74        0.74       97.08
         27 |         40        0.40       97.48
         28 |         40        0.40       97.88
         29 |         32        0.32       98.20
         30 |         31        0.31       98.51
         31 |         26        0.26       98.77
         32 |         24        0.24       99.01
         33 |         18        0.18       99.19
         34 |         15        0.15       99.34
         35 |          7        0.07       99.41
         36 |          6        0.06       99.47
         37 |          8        0.08       99.55
         38 |          8        0.08       99.63
         39 |          6        0.06       99.69
         40 |          6        0.06       99.75
         41 |          4        0.04       99.79
         42 |          5        0.05       99.84
         43 |          1        0.01       99.85
         44 |          4        0.04       99.89
         45 |          2        0.02       99.91
         46 |          1        0.01       99.92
         48 |          1        0.01       99.93
         51 |          3        0.03       99.96
         52 |          1        0.01       99.97
         53 |          1        0.01       99.98
         67 |          1        0.01       99.99
         77 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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