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

         p1 |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      7,380       73.80       73.80
          1 |         48        0.48       74.28
          2 |         48        0.48       74.76
          3 |         60        0.60       75.36
          4 |         76        0.76       76.12
          5 |         73        0.73       76.85
          6 |         67        0.67       77.52
          7 |         71        0.71       78.23
          8 |         81        0.81       79.04
          9 |         87        0.87       79.91
         10 |        110        1.10       81.01
         11 |        104        1.04       82.05
         12 |        107        1.07       83.12
         13 |        120        1.20       84.32
         14 |        103        1.03       85.35
         15 |        126        1.26       86.61
         16 |        118        1.18       87.79
         17 |         94        0.94       88.73
         18 |        108        1.08       89.81
         19 |        104        1.04       90.85
         20 |        105        1.05       91.90
         21 |        121        1.21       93.11
         22 |         97        0.97       94.08
         23 |         85        0.85       94.93
         24 |         68        0.68       95.61
         25 |         74        0.74       96.35
         26 |         59        0.59       96.94
         27 |         55        0.55       97.49
         28 |         34        0.34       97.83
         29 |         38        0.38       98.21
         30 |         29        0.29       98.50
         31 |         28        0.28       98.78
         32 |         16        0.16       98.94
         33 |         12        0.12       99.06
         34 |         19        0.19       99.25
         35 |         16        0.16       99.41
         36 |          7        0.07       99.48
         37 |          6        0.06       99.54
         38 |         14        0.14       99.68
         39 |          6        0.06       99.74
         40 |          2        0.02       99.76
         41 |          6        0.06       99.82
         42 |          4        0.04       99.86
         43 |          2        0.02       99.88
         45 |          3        0.03       99.91
         46 |          2        0.02       99.93
         47 |          1        0.01       99.94
         49 |          1        0.01       99.95
         50 |          1        0.01       99.96
         52 |          1        0.01       99.97
         54 |          1        0.01       99.98
         57 |          1        0.01       99.99
         61 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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