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

        p10 |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      7,457       74.57       74.57
          1 |         34        0.34       74.91
          2 |         54        0.54       75.45
          3 |         44        0.44       75.89
          4 |         48        0.48       76.37
          5 |         54        0.54       76.91
          6 |         62        0.62       77.53
          7 |         62        0.62       78.15
          8 |         59        0.59       78.74
          9 |         74        0.74       79.48
         10 |         81        0.81       80.29
         11 |         96        0.96       81.25
         12 |        102        1.02       82.27
         13 |        107        1.07       83.34
         14 |        106        1.06       84.40
         15 |        117        1.17       85.57
         16 |        113        1.13       86.70
         17 |        117        1.17       87.87
         18 |        117        1.17       89.04
         19 |        125        1.25       90.29
         20 |        104        1.04       91.33
         21 |        111        1.11       92.44
         22 |         90        0.90       93.34
         23 |         91        0.91       94.25
         24 |         86        0.86       95.11
         25 |         89        0.89       96.00
         26 |         69        0.69       96.69
         27 |         45        0.45       97.14
         28 |         57        0.57       97.71
         29 |         29        0.29       98.00
         30 |         39        0.39       98.39
         31 |         30        0.30       98.69
         32 |         20        0.20       98.89
         33 |         22        0.22       99.11
         34 |         14        0.14       99.25
         35 |          9        0.09       99.34
         36 |         15        0.15       99.49
         37 |         10        0.10       99.59
         38 |          5        0.05       99.64
         39 |          6        0.06       99.70
         40 |          8        0.08       99.78
         42 |          2        0.02       99.80
         43 |          4        0.04       99.84
         44 |          7        0.07       99.91
         48 |          2        0.02       99.93
         50 |          1        0.01       99.94
         62 |          1        0.01       99.95
         67 |          1        0.01       99.96
         68 |          1        0.01       99.97
         79 |          1        0.01       99.98
         94 |          2        0.02      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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