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

         p1 |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      7,454       74.54       74.54
          1 |         28        0.28       74.82
          2 |         62        0.62       75.44
          3 |         60        0.60       76.04
          4 |         49        0.49       76.53
          5 |         51        0.51       77.04
          6 |         77        0.77       77.81
          7 |         72        0.72       78.53
          8 |         73        0.73       79.26
          9 |         84        0.84       80.10
         10 |         95        0.95       81.05
         11 |        114        1.14       82.19
         12 |         91        0.91       83.10
         13 |         94        0.94       84.04
         14 |        105        1.05       85.09
         15 |        101        1.01       86.10
         16 |        101        1.01       87.11
         17 |        122        1.22       88.33
         18 |        114        1.14       89.47
         19 |         95        0.95       90.42
         20 |        115        1.15       91.57
         21 |        109        1.09       92.66
         22 |        100        1.00       93.66
         23 |         85        0.85       94.51
         24 |         68        0.68       95.19
         25 |         69        0.69       95.88
         26 |         51        0.51       96.39
         27 |         66        0.66       97.05
         28 |         51        0.51       97.56
         29 |         34        0.34       97.90
         30 |         33        0.33       98.23
         31 |         28        0.28       98.51
         32 |         17        0.17       98.68
         33 |         23        0.23       98.91
         34 |         26        0.26       99.17
         35 |         17        0.17       99.34
         36 |         10        0.10       99.44
         37 |          8        0.08       99.52
         38 |         16        0.16       99.68
         39 |          6        0.06       99.74
         40 |          5        0.05       99.79
         41 |          3        0.03       99.82
         42 |          3        0.03       99.85
         43 |          3        0.03       99.88
         45 |          1        0.01       99.89
         46 |          3        0.03       99.92
         48 |          2        0.02       99.94
         51 |          1        0.01       99.95
         52 |          1        0.01       99.96
         55 |          1        0.01       99.97
         58 |          1        0.01       99.98
         71 |          1        0.01       99.99
         72 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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