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

         p1 |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      7,321       73.21       73.21
          1 |         32        0.32       73.53
          2 |         72        0.72       74.25
          3 |         56        0.56       74.81
          4 |         50        0.50       75.31
          5 |         69        0.69       76.00
          6 |         78        0.78       76.78
          7 |         74        0.74       77.52
          8 |         89        0.89       78.41
          9 |         85        0.85       79.26
         10 |        100        1.00       80.26
         11 |         97        0.97       81.23
         12 |        115        1.15       82.38
         13 |        111        1.11       83.49
         14 |        119        1.19       84.68
         15 |        121        1.21       85.89
         16 |        124        1.24       87.13
         17 |        125        1.25       88.38
         18 |        132        1.32       89.70
         19 |        111        1.11       90.81
         20 |         94        0.94       91.75
         21 |        114        1.14       92.89
         22 |         85        0.85       93.74
         23 |         80        0.80       94.54
         24 |         73        0.73       95.27
         25 |         64        0.64       95.91
         26 |         51        0.51       96.42
         27 |         62        0.62       97.04
         28 |         44        0.44       97.48
         29 |         47        0.47       97.95
         30 |         39        0.39       98.34
         31 |         28        0.28       98.62
         32 |         20        0.20       98.82
         33 |         22        0.22       99.04
         34 |         21        0.21       99.25
         35 |         18        0.18       99.43
         36 |         12        0.12       99.55
         37 |          6        0.06       99.61
         38 |         10        0.10       99.71
         39 |          5        0.05       99.76
         40 |          3        0.03       99.79
         41 |          4        0.04       99.83
         42 |          7        0.07       99.90
         43 |          3        0.03       99.93
         45 |          4        0.04       99.97
         46 |          1        0.01       99.98
         49 |          1        0.01       99.99
         55 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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