Frequencies for first 10,000 rows of p7 variable in miper dataset :

         p7 |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      7,488       74.88       74.88
          1 |         37        0.37       75.25
          2 |         61        0.61       75.86
          3 |         49        0.49       76.35
          4 |         65        0.65       77.00
          5 |         67        0.67       77.67
          6 |         55        0.55       78.22
          7 |         59        0.59       78.81
          8 |         76        0.76       79.57
          9 |         73        0.73       80.30
         10 |         74        0.74       81.04
         11 |         86        0.86       81.90
         12 |         73        0.73       82.63
         13 |         84        0.84       83.47
         14 |        104        1.04       84.51
         15 |        105        1.05       85.56
         16 |        130        1.30       86.86
         17 |        110        1.10       87.96
         18 |        115        1.15       89.11
         19 |        117        1.17       90.28
         20 |        114        1.14       91.42
         21 |        114        1.14       92.56
         22 |         88        0.88       93.44
         23 |         88        0.88       94.32
         24 |         71        0.71       95.03
         25 |         84        0.84       95.87
         26 |         54        0.54       96.41
         27 |         55        0.55       96.96
         28 |         57        0.57       97.53
         29 |         44        0.44       97.97
         30 |         31        0.31       98.28
         31 |         34        0.34       98.62
         32 |         25        0.25       98.87
         33 |         18        0.18       99.05
         34 |         16        0.16       99.21
         35 |         15        0.15       99.36
         36 |         12        0.12       99.48
         37 |         10        0.10       99.58
         38 |          6        0.06       99.64
         39 |          7        0.07       99.71
         40 |          5        0.05       99.76
         41 |          2        0.02       99.78
         42 |          2        0.02       99.80
         43 |          2        0.02       99.82
         45 |          5        0.05       99.87
         46 |          1        0.01       99.88
         47 |          2        0.02       99.90
         48 |          1        0.01       99.91
         50 |          1        0.01       99.92
         51 |          1        0.01       99.93
         54 |          1        0.01       99.94
         55 |          1        0.01       99.95
         57 |          1        0.01       99.96
         58 |          1        0.01       99.97
         60 |          1        0.01       99.98
         62 |          1        0.01       99.99
         66 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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