Frequencies for first 10,000 rows of p2 variable in miper dataset :

         p2 |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      7,291       72.91       72.91
          1 |         46        0.46       73.37
          2 |         71        0.71       74.08
          3 |         43        0.43       74.51
          4 |         72        0.72       75.23
          5 |         67        0.67       75.90
          6 |         68        0.68       76.58
          7 |         96        0.96       77.54
          8 |         84        0.84       78.38
          9 |         99        0.99       79.37
         10 |         87        0.87       80.24
         11 |        101        1.01       81.25
         12 |        112        1.12       82.37
         13 |        148        1.48       83.85
         14 |        102        1.02       84.87
         15 |         98        0.98       85.85
         16 |        120        1.20       87.05
         17 |        117        1.17       88.22
         18 |        132        1.32       89.54
         19 |        117        1.17       90.71
         20 |        110        1.10       91.81
         21 |        102        1.02       92.83
         22 |        100        1.00       93.83
         23 |         92        0.92       94.75
         24 |         88        0.88       95.63
         25 |         55        0.55       96.18
         26 |         61        0.61       96.79
         27 |         60        0.60       97.39
         28 |         47        0.47       97.86
         29 |         39        0.39       98.25
         30 |         34        0.34       98.59
         31 |         28        0.28       98.87
         32 |         15        0.15       99.02
         33 |         20        0.20       99.22
         34 |         12        0.12       99.34
         35 |         16        0.16       99.50
         36 |         10        0.10       99.60
         37 |          9        0.09       99.69
         38 |          6        0.06       99.75
         39 |          4        0.04       99.79
         40 |          6        0.06       99.85
         42 |          2        0.02       99.87
         43 |          2        0.02       99.89
         44 |          2        0.02       99.91
         46 |          3        0.03       99.94
         47 |          1        0.01       99.95
         48 |          1        0.01       99.96
         50 |          2        0.02       99.98
         51 |          1        0.01       99.99
         75 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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