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

         p9 |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      6,346       63.46       63.46
          1 |         40        0.40       63.86
          2 |         73        0.73       64.59
          3 |         84        0.84       65.43
          4 |         96        0.96       66.39
          5 |        100        1.00       67.39
          6 |        109        1.09       68.48
          7 |        114        1.14       69.62
          8 |        128        1.28       70.90
          9 |        138        1.38       72.28
         10 |        159        1.59       73.87
         11 |        149        1.49       75.36
         12 |        157        1.57       76.93
         13 |        182        1.82       78.75
         14 |        168        1.68       80.43
         15 |        195        1.95       82.38
         16 |        176        1.76       84.14
         17 |        156        1.56       85.70
         18 |        164        1.64       87.34
         19 |        151        1.51       88.85
         20 |        129        1.29       90.14
         21 |        129        1.29       91.43
         22 |        117        1.17       92.60
         23 |        117        1.17       93.77
         24 |         88        0.88       94.65
         25 |         83        0.83       95.48
         26 |         82        0.82       96.30
         27 |         71        0.71       97.01
         28 |         57        0.57       97.58
         29 |         42        0.42       98.00
         30 |         45        0.45       98.45
         31 |         29        0.29       98.74
         32 |         21        0.21       98.95
         33 |         18        0.18       99.13
         34 |         16        0.16       99.29
         35 |         10        0.10       99.39
         36 |         12        0.12       99.51
         37 |          6        0.06       99.57
         38 |          9        0.09       99.66
         39 |          7        0.07       99.73
         40 |          4        0.04       99.77
         41 |          9        0.09       99.86
         42 |          4        0.04       99.90
         43 |          2        0.02       99.92
         44 |          3        0.03       99.95
         46 |          1        0.01       99.96
         49 |          1        0.01       99.97
         55 |          1        0.01       99.98
         57 |          1        0.01       99.99
         62 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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