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

         p1 |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      7,431       74.31       74.31
          1 |         34        0.34       74.65
          2 |         53        0.53       75.18
          3 |         50        0.50       75.68
          4 |         49        0.49       76.17
          5 |         47        0.47       76.64
          6 |         60        0.60       77.24
          7 |         64        0.64       77.88
          8 |         68        0.68       78.56
          9 |         71        0.71       79.27
         10 |         90        0.90       80.17
         11 |        103        1.03       81.20
         12 |         99        0.99       82.19
         13 |         98        0.98       83.17
         14 |        117        1.17       84.34
         15 |        126        1.26       85.60
         16 |        111        1.11       86.71
         17 |        118        1.18       87.89
         18 |        118        1.18       89.07
         19 |        120        1.20       90.27
         20 |        101        1.01       91.28
         21 |        110        1.10       92.38
         22 |        103        1.03       93.41
         23 |         88        0.88       94.29
         24 |         83        0.83       95.12
         25 |         81        0.81       95.93
         26 |         71        0.71       96.64
         27 |         48        0.48       97.12
         28 |         58        0.58       97.70
         29 |         32        0.32       98.02
         30 |         41        0.41       98.43
         31 |         34        0.34       98.77
         32 |         20        0.20       98.97
         33 |         17        0.17       99.14
         34 |         13        0.13       99.27
         35 |          7        0.07       99.34
         36 |         16        0.16       99.50
         37 |          9        0.09       99.59
         38 |          5        0.05       99.64
         39 |          6        0.06       99.70
         40 |          8        0.08       99.78
         41 |          2        0.02       99.80
         42 |          2        0.02       99.82
         43 |          4        0.04       99.86
         44 |          6        0.06       99.92
         48 |          2        0.02       99.94
         50 |          1        0.01       99.95
         67 |          1        0.01       99.96
         68 |          1        0.01       99.97
         79 |          1        0.01       99.98
         94 |          2        0.02      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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