Frequencies for first 10,000 rows of p9 variable in miper dataset :

         p9 |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      7,382       73.82       73.82
          1 |         33        0.33       74.15
          2 |         52        0.52       74.67
          3 |         51        0.51       75.18
          4 |         51        0.51       75.69
          5 |         56        0.56       76.25
          6 |         68        0.68       76.93
          7 |         76        0.76       77.69
          8 |         93        0.93       78.62
          9 |         84        0.84       79.46
         10 |         68        0.68       80.14
         11 |        102        1.02       81.16
         12 |         96        0.96       82.12
         13 |        110        1.10       83.22
         14 |        132        1.32       84.54
         15 |        113        1.13       85.67
         16 |        112        1.12       86.79
         17 |        112        1.12       87.91
         18 |        124        1.24       89.15
         19 |        117        1.17       90.32
         20 |         96        0.96       91.28
         21 |        126        1.26       92.54
         22 |         83        0.83       93.37
         23 |         85        0.85       94.22
         24 |         92        0.92       95.14
         25 |         56        0.56       95.70
         26 |         76        0.76       96.46
         27 |         57        0.57       97.03
         28 |         51        0.51       97.54
         29 |         42        0.42       97.96
         30 |         28        0.28       98.24
         31 |         31        0.31       98.55
         32 |         17        0.17       98.72
         33 |         23        0.23       98.95
         34 |         21        0.21       99.16
         35 |         14        0.14       99.30
         36 |          9        0.09       99.39
         37 |         14        0.14       99.53
         38 |         12        0.12       99.65
         39 |          7        0.07       99.72
         40 |          9        0.09       99.81
         41 |          5        0.05       99.86
         43 |          3        0.03       99.89
         44 |          2        0.02       99.91
         45 |          2        0.02       99.93
         46 |          3        0.03       99.96
         48 |          1        0.01       99.97
         49 |          1        0.01       99.98
         53 |          1        0.01       99.99
         56 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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