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

         p1 |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      6,627       66.27       66.27
          1 |         43        0.43       66.70
          2 |         82        0.82       67.52
          3 |         75        0.75       68.27
          4 |         65        0.65       68.92
          5 |         76        0.76       69.68
          6 |         90        0.90       70.58
          7 |         91        0.91       71.49
          8 |        101        1.01       72.50
          9 |        118        1.18       73.68
         10 |        114        1.14       74.82
         11 |        139        1.39       76.21
         12 |        155        1.55       77.76
         13 |        131        1.31       79.07
         14 |        144        1.44       80.51
         15 |        181        1.81       82.32
         16 |        168        1.68       84.00
         17 |        170        1.70       85.70
         18 |        147        1.47       87.17
         19 |        153        1.53       88.70
         20 |        149        1.49       90.19
         21 |        143        1.43       91.62
         22 |        121        1.21       92.83
         23 |        105        1.05       93.88
         24 |        104        1.04       94.92
         25 |         91        0.91       95.83
         26 |         63        0.63       96.46
         27 |         69        0.69       97.15
         28 |         56        0.56       97.71
         29 |         48        0.48       98.19
         30 |         43        0.43       98.62
         31 |         30        0.30       98.92
         32 |         16        0.16       99.08
         33 |         18        0.18       99.26
         34 |         12        0.12       99.38
         35 |         10        0.10       99.48
         36 |          8        0.08       99.56
         37 |          9        0.09       99.65
         38 |          5        0.05       99.70
         39 |          4        0.04       99.74
         40 |          6        0.06       99.80
         41 |          2        0.02       99.82
         42 |          4        0.04       99.86
         43 |          4        0.04       99.90
         44 |          4        0.04       99.94
         46 |          1        0.01       99.95
         48 |          1        0.01       99.96
         52 |          1        0.01       99.97
         56 |          1        0.01       99.98
         61 |          1        0.01       99.99
         66 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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