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

         p7 |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      7,157       71.57       71.57
          1 |         31        0.31       71.88
          2 |         76        0.76       72.64
          3 |         59        0.59       73.23
          4 |         63        0.63       73.86
          5 |         58        0.58       74.44
          6 |         69        0.69       75.13
          7 |         73        0.73       75.86
          8 |        100        1.00       76.86
          9 |         87        0.87       77.73
         10 |        106        1.06       78.79
         11 |        117        1.17       79.96
         12 |        117        1.17       81.13
         13 |        143        1.43       82.56
         14 |        126        1.26       83.82
         15 |        140        1.40       85.22
         16 |        128        1.28       86.50
         17 |        124        1.24       87.74
         18 |        120        1.20       88.94
         19 |        110        1.10       90.04
         20 |        113        1.13       91.17
         21 |         84        0.84       92.01
         22 |        122        1.22       93.23
         23 |         91        0.91       94.14
         24 |        101        1.01       95.15
         25 |         61        0.61       95.76
         26 |         54        0.54       96.30
         27 |         49        0.49       96.79
         28 |         49        0.49       97.28
         29 |         56        0.56       97.84
         30 |         41        0.41       98.25
         31 |         25        0.25       98.50
         32 |         30        0.30       98.80
         33 |         27        0.27       99.07
         34 |         19        0.19       99.26
         35 |         15        0.15       99.41
         36 |          8        0.08       99.49
         37 |         10        0.10       99.59
         38 |          9        0.09       99.68
         39 |          6        0.06       99.74
         40 |          7        0.07       99.81
         41 |          4        0.04       99.85
         42 |          2        0.02       99.87
         43 |          1        0.01       99.88
         44 |          3        0.03       99.91
         45 |          5        0.05       99.96
         46 |          1        0.01       99.97
         47 |          1        0.01       99.98
         51 |          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