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

         p1 |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      7,399       73.99       73.99
          1 |         45        0.45       74.44
          2 |         66        0.66       75.10
          3 |         62        0.62       75.72
          4 |         70        0.70       76.42
          5 |         72        0.72       77.14
          6 |         58        0.58       77.72
          7 |         79        0.79       78.51
          8 |         70        0.70       79.21
          9 |        113        1.13       80.34
         10 |         97        0.97       81.31
         11 |        111        1.11       82.42
         12 |        132        1.32       83.74
         13 |         95        0.95       84.69
         14 |        115        1.15       85.84
         15 |        115        1.15       86.99
         16 |        115        1.15       88.14
         17 |        129        1.29       89.43
         18 |         90        0.90       90.33
         19 |        117        1.17       91.50
         20 |        106        1.06       92.56
         21 |         88        0.88       93.44
         22 |         99        0.99       94.43
         23 |         76        0.76       95.19
         24 |         59        0.59       95.78
         25 |         74        0.74       96.52
         26 |         55        0.55       97.07
         27 |         46        0.46       97.53
         28 |         41        0.41       97.94
         29 |         34        0.34       98.28
         30 |         29        0.29       98.57
         31 |         18        0.18       98.75
         32 |         24        0.24       98.99
         33 |         15        0.15       99.14
         34 |         12        0.12       99.26
         35 |         14        0.14       99.40
         36 |         10        0.10       99.50
         37 |         12        0.12       99.62
         38 |          5        0.05       99.67
         39 |          7        0.07       99.74
         40 |          1        0.01       99.75
         41 |          6        0.06       99.81
         42 |          2        0.02       99.83
         43 |          1        0.01       99.84
         44 |          1        0.01       99.85
         45 |          2        0.02       99.87
         46 |          2        0.02       99.89
         47 |          3        0.03       99.92
         48 |          1        0.01       99.93
         50 |          1        0.01       99.94
         52 |          1        0.01       99.95
         53 |          1        0.01       99.96
         54 |          1        0.01       99.97
         55 |          2        0.02       99.99
         61 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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