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

         p1 |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      7,477       74.77       74.77
          1 |         45        0.45       75.22
          2 |         61        0.61       75.83
          3 |         34        0.34       76.17
          4 |         41        0.41       76.58
          5 |         50        0.50       77.08
          6 |         51        0.51       77.59
          7 |         55        0.55       78.14
          8 |         68        0.68       78.82
          9 |         78        0.78       79.60
         10 |         97        0.97       80.57
         11 |         98        0.98       81.55
         12 |         95        0.95       82.50
         13 |        109        1.09       83.59
         14 |        104        1.04       84.63
         15 |        113        1.13       85.76
         16 |        114        1.14       86.90
         17 |        114        1.14       88.04
         18 |         95        0.95       88.99
         19 |        133        1.33       90.32
         20 |        102        1.02       91.34
         21 |        103        1.03       92.37
         22 |        102        1.02       93.39
         23 |         90        0.90       94.29
         24 |         76        0.76       95.05
         25 |         69        0.69       95.74
         26 |         65        0.65       96.39
         27 |         53        0.53       96.92
         28 |         47        0.47       97.39
         29 |         40        0.40       97.79
         30 |         48        0.48       98.27
         31 |         24        0.24       98.51
         32 |         15        0.15       98.66
         33 |         19        0.19       98.85
         34 |         18        0.18       99.03
         35 |         16        0.16       99.19
         36 |         16        0.16       99.35
         37 |          9        0.09       99.44
         38 |          8        0.08       99.52
         39 |          7        0.07       99.59
         40 |          9        0.09       99.68
         41 |          9        0.09       99.77
         42 |          6        0.06       99.83
         43 |          3        0.03       99.86
         44 |          2        0.02       99.88
         45 |          2        0.02       99.90
         46 |          1        0.01       99.91
         47 |          1        0.01       99.92
         49 |          1        0.01       99.93
         50 |          1        0.01       99.94
         51 |          2        0.02       99.96
         54 |          1        0.01       99.97
         60 |          1        0.01       99.98
         63 |          1        0.01       99.99
         65 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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