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

         p7 |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      6,563       65.63       65.63
          1 |         28        0.28       65.91
          2 |         72        0.72       66.63
          3 |         59        0.59       67.22
          4 |         74        0.74       67.96
          5 |         81        0.81       68.77
          6 |         91        0.91       69.68
          7 |        113        1.13       70.81
          8 |        103        1.03       71.84
          9 |        111        1.11       72.95
         10 |        116        1.16       74.11
         11 |        134        1.34       75.45
         12 |        158        1.58       77.03
         13 |        150        1.50       78.53
         14 |        172        1.72       80.25
         15 |        151        1.51       81.76
         16 |        165        1.65       83.41
         17 |        160        1.60       85.01
         18 |        182        1.82       86.83
         19 |        157        1.57       88.40
         20 |        139        1.39       89.79
         21 |        129        1.29       91.08
         22 |        146        1.46       92.54
         23 |        111        1.11       93.65
         24 |        111        1.11       94.76
         25 |         85        0.85       95.61
         26 |         90        0.90       96.51
         27 |         46        0.46       96.97
         28 |         52        0.52       97.49
         29 |         37        0.37       97.86
         30 |         31        0.31       98.17
         31 |         40        0.40       98.57
         32 |         30        0.30       98.87
         33 |         23        0.23       99.10
         34 |         18        0.18       99.28
         35 |         11        0.11       99.39
         36 |         13        0.13       99.52
         37 |          9        0.09       99.61
         38 |         10        0.10       99.71
         39 |          7        0.07       99.78
         40 |          6        0.06       99.84
         41 |          1        0.01       99.85
         42 |          4        0.04       99.89
         43 |          4        0.04       99.93
         44 |          1        0.01       99.94
         48 |          2        0.02       99.96
         50 |          1        0.01       99.97
         53 |          2        0.02       99.99
         70 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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