Frequencies for first 10,000 rows of p10 variable in miper dataset :

        p10 |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      7,496       74.96       74.96
          1 |         37        0.37       75.33
          2 |         66        0.66       75.99
          3 |         59        0.59       76.58
          4 |         58        0.58       77.16
          5 |         66        0.66       77.82
          6 |         70        0.70       78.52
          7 |         75        0.75       79.27
          8 |         84        0.84       80.11
          9 |         78        0.78       80.89
         10 |         90        0.90       81.79
         11 |         93        0.93       82.72
         12 |        114        1.14       83.86
         13 |         92        0.92       84.78
         14 |        114        1.14       85.92
         15 |        117        1.17       87.09
         16 |        127        1.27       88.36
         17 |        118        1.18       89.54
         18 |        136        1.36       90.90
         19 |         86        0.86       91.76
         20 |         91        0.91       92.67
         21 |         90        0.90       93.57
         22 |         88        0.88       94.45
         23 |         72        0.72       95.17
         24 |         66        0.66       95.83
         25 |         62        0.62       96.45
         26 |         53        0.53       96.98
         27 |         53        0.53       97.51
         28 |         43        0.43       97.94
         29 |         31        0.31       98.25
         30 |         30        0.30       98.55
         31 |         22        0.22       98.77
         32 |         18        0.18       98.95
         33 |         13        0.13       99.08
         34 |         14        0.14       99.22
         35 |         12        0.12       99.34
         36 |          4        0.04       99.38
         37 |         10        0.10       99.48
         38 |         10        0.10       99.58
         39 |          4        0.04       99.62
         40 |          8        0.08       99.70
         41 |          6        0.06       99.76
         42 |          5        0.05       99.81
         43 |          1        0.01       99.82
         44 |          1        0.01       99.83
         45 |          2        0.02       99.85
         46 |          1        0.01       99.86
         47 |          3        0.03       99.89
         48 |          3        0.03       99.92
         49 |          1        0.01       99.93
         50 |          2        0.02       99.95
         53 |          2        0.02       99.97
         55 |          1        0.01       99.98
         58 |          1        0.01       99.99
         70 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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