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

         p9 |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      6,351       63.51       63.51
          1 |         46        0.46       63.97
          2 |         75        0.75       64.72
          3 |         87        0.87       65.59
          4 |         75        0.75       66.34
          5 |         95        0.95       67.29
          6 |        103        1.03       68.32
          7 |        113        1.13       69.45
          8 |        106        1.06       70.51
          9 |        142        1.42       71.93
         10 |        113        1.13       73.06
         11 |        151        1.51       74.57
         12 |        142        1.42       75.99
         13 |        158        1.58       77.57
         14 |        164        1.64       79.21
         15 |        174        1.74       80.95
         16 |        197        1.97       82.92
         17 |        186        1.86       84.78
         18 |        163        1.63       86.41
         19 |        165        1.65       88.06
         20 |        153        1.53       89.59
         21 |        149        1.49       91.08
         22 |        132        1.32       92.40
         23 |        107        1.07       93.47
         24 |         89        0.89       94.36
         25 |         89        0.89       95.25
         26 |         80        0.80       96.05
         27 |         62        0.62       96.67
         28 |         62        0.62       97.29
         29 |         42        0.42       97.71
         30 |         34        0.34       98.05
         31 |         34        0.34       98.39
         32 |         31        0.31       98.70
         33 |         29        0.29       98.99
         34 |         23        0.23       99.22
         35 |         13        0.13       99.35
         36 |          9        0.09       99.44
         37 |         13        0.13       99.57
         38 |          1        0.01       99.58
         39 |         10        0.10       99.68
         40 |          5        0.05       99.73
         41 |          4        0.04       99.77
         42 |          4        0.04       99.81
         43 |          4        0.04       99.85
         44 |          3        0.03       99.88
         46 |          4        0.04       99.92
         47 |          3        0.03       99.95
         48 |          1        0.01       99.96
         49 |          2        0.02       99.98
         51 |          1        0.01       99.99
         59 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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