Frequencies for first 10,000 rows of p3 variable in miper dataset :

         p3 |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      7,492       74.92       74.92
          1 |         31        0.31       75.23
          2 |         68        0.68       75.91
          3 |         57        0.57       76.48
          4 |         58        0.58       77.06
          5 |         57        0.57       77.63
          6 |         77        0.77       78.40
          7 |         65        0.65       79.05
          8 |         78        0.78       79.83
          9 |         81        0.81       80.64
         10 |        102        1.02       81.66
         11 |         94        0.94       82.60
         12 |        100        1.00       83.60
         13 |         97        0.97       84.57
         14 |        124        1.24       85.81
         15 |        125        1.25       87.06
         16 |        123        1.23       88.29
         17 |        103        1.03       89.32
         18 |         95        0.95       90.27
         19 |        118        1.18       91.45
         20 |        101        1.01       92.46
         21 |         98        0.98       93.44
         22 |         82        0.82       94.26
         23 |         83        0.83       95.09
         24 |         57        0.57       95.66
         25 |         65        0.65       96.31
         26 |         68        0.68       96.99
         27 |         40        0.40       97.39
         28 |         43        0.43       97.82
         29 |         32        0.32       98.14
         30 |         31        0.31       98.45
         31 |         32        0.32       98.77
         32 |         25        0.25       99.02
         33 |         22        0.22       99.24
         34 |         16        0.16       99.40
         35 |          6        0.06       99.46
         36 |          5        0.05       99.51
         37 |          7        0.07       99.58
         38 |          8        0.08       99.66
         39 |          5        0.05       99.71
         40 |          6        0.06       99.77
         41 |          3        0.03       99.80
         42 |          5        0.05       99.85
         43 |          2        0.02       99.87
         44 |          5        0.05       99.92
         45 |          2        0.02       99.94
         47 |          1        0.01       99.95
         49 |          1        0.01       99.96
         51 |          2        0.02       99.98
         67 |          1        0.01       99.99
         77 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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