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

         p1 |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      7,507       75.07       75.07
          1 |         38        0.38       75.45
          2 |         62        0.62       76.07
          3 |         54        0.54       76.61
          4 |         66        0.66       77.27
          5 |         59        0.59       77.86
          6 |         73        0.73       78.59
          7 |         72        0.72       79.31
          8 |         85        0.85       80.16
          9 |         89        0.89       81.05
         10 |         96        0.96       82.01
         11 |        108        1.08       83.09
         12 |         94        0.94       84.03
         13 |         98        0.98       85.01
         14 |         97        0.97       85.98
         15 |         87        0.87       86.85
         16 |        101        1.01       87.86
         17 |        113        1.13       88.99
         18 |        110        1.10       90.09
         19 |         94        0.94       91.03
         20 |        100        1.00       92.03
         21 |        107        1.07       93.10
         22 |         88        0.88       93.98
         23 |         71        0.71       94.69
         24 |         77        0.77       95.46
         25 |         85        0.85       96.31
         26 |         63        0.63       96.94
         27 |         54        0.54       97.48
         28 |         40        0.40       97.88
         29 |         34        0.34       98.22
         30 |         37        0.37       98.59
         31 |         24        0.24       98.83
         32 |         24        0.24       99.07
         33 |         12        0.12       99.19
         34 |          8        0.08       99.27
         35 |         16        0.16       99.43
         36 |          6        0.06       99.49
         37 |          8        0.08       99.57
         38 |          2        0.02       99.59
         39 |          5        0.05       99.64
         40 |          5        0.05       99.69
         41 |          5        0.05       99.74
         42 |          7        0.07       99.81
         43 |          4        0.04       99.85
         44 |          2        0.02       99.87
         46 |          1        0.01       99.88
         47 |          1        0.01       99.89
         48 |          3        0.03       99.92
         49 |          1        0.01       99.93
         50 |          2        0.02       99.95
         54 |          1        0.01       99.96
         57 |          1        0.01       99.97
         60 |          3        0.03      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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