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

         p1 |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      6,108       61.08       61.08
          1 |         34        0.34       61.42
          2 |         70        0.70       62.12
          3 |         83        0.83       62.95
          4 |         77        0.77       63.72
          5 |         87        0.87       64.59
          6 |         82        0.82       65.41
          7 |        109        1.09       66.50
          8 |        118        1.18       67.68
          9 |        142        1.42       69.10
         10 |        180        1.80       70.90
         11 |        143        1.43       72.33
         12 |        159        1.59       73.92
         13 |        171        1.71       75.63
         14 |        177        1.77       77.40
         15 |        181        1.81       79.21
         16 |        205        2.05       81.26
         17 |        201        2.01       83.27
         18 |        181        1.81       85.08
         19 |        177        1.77       86.85
         20 |        153        1.53       88.38
         21 |        150        1.50       89.88
         22 |        154        1.54       91.42
         23 |        136        1.36       92.78
         24 |        117        1.17       93.95
         25 |         97        0.97       94.92
         26 |         95        0.95       95.87
         27 |         80        0.80       96.67
         28 |         58        0.58       97.25
         29 |         44        0.44       97.69
         30 |         30        0.30       97.99
         31 |         41        0.41       98.40
         32 |         25        0.25       98.65
         33 |         33        0.33       98.98
         34 |         18        0.18       99.16
         35 |         17        0.17       99.33
         36 |         13        0.13       99.46
         37 |         11        0.11       99.57
         38 |          9        0.09       99.66
         39 |          7        0.07       99.73
         40 |          3        0.03       99.76
         41 |          7        0.07       99.83
         42 |          4        0.04       99.87
         43 |          4        0.04       99.91
         44 |          1        0.01       99.92
         45 |          3        0.03       99.95
         46 |          1        0.01       99.96
         48 |          2        0.02       99.98
         50 |          1        0.01       99.99
         52 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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