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

         p9 |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      7,402       74.02       74.02
          1 |         31        0.31       74.33
          2 |         69        0.69       75.02
          3 |         47        0.47       75.49
          4 |         67        0.67       76.16
          5 |         51        0.51       76.67
          6 |         71        0.71       77.38
          7 |         76        0.76       78.14
          8 |         92        0.92       79.06
          9 |         96        0.96       80.02
         10 |         87        0.87       80.89
         11 |         83        0.83       81.72
         12 |        106        1.06       82.78
         13 |         85        0.85       83.63
         14 |        117        1.17       84.80
         15 |        121        1.21       86.01
         16 |        116        1.16       87.17
         17 |        109        1.09       88.26
         18 |        104        1.04       89.30
         19 |        106        1.06       90.36
         20 |        117        1.17       91.53
         21 |         98        0.98       92.51
         22 |        118        1.18       93.69
         23 |         87        0.87       94.56
         24 |         79        0.79       95.35
         25 |         74        0.74       96.09
         26 |         53        0.53       96.62
         27 |         54        0.54       97.16
         28 |         50        0.50       97.66
         29 |         39        0.39       98.05
         30 |         20        0.20       98.25
         31 |         18        0.18       98.43
         32 |         25        0.25       98.68
         33 |         30        0.30       98.98
         34 |         20        0.20       99.18
         35 |         21        0.21       99.39
         36 |          8        0.08       99.47
         37 |         14        0.14       99.61
         38 |          3        0.03       99.64
         39 |          5        0.05       99.69
         40 |          4        0.04       99.73
         41 |          5        0.05       99.78
         42 |          3        0.03       99.81
         43 |          6        0.06       99.87
         44 |          2        0.02       99.89
         45 |          3        0.03       99.92
         49 |          2        0.02       99.94
         50 |          1        0.01       99.95
         51 |          1        0.01       99.96
         52 |          1        0.01       99.97
         55 |          1        0.01       99.98
         58 |          1        0.01       99.99
         72 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 22 Oct 2016