Frequencies for first 10,000 rows of p8 variable in miper dataset :

         p8 |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      7,498       74.98       74.98
          1 |         31        0.31       75.29
          2 |         63        0.63       75.92
          3 |         48        0.48       76.40
          4 |         61        0.61       77.01
          5 |         55        0.55       77.56
          6 |         70        0.70       78.26
          7 |         66        0.66       78.92
          8 |         77        0.77       79.69
          9 |         91        0.91       80.60
         10 |        104        1.04       81.64
         11 |        104        1.04       82.68
         12 |         97        0.97       83.65
         13 |        100        1.00       84.65
         14 |        114        1.14       85.79
         15 |        105        1.05       86.84
         16 |        131        1.31       88.15
         17 |        105        1.05       89.20
         18 |        103        1.03       90.23
         19 |        120        1.20       91.43
         20 |         98        0.98       92.41
         21 |         96        0.96       93.37
         22 |         93        0.93       94.30
         23 |         77        0.77       95.07
         24 |         70        0.70       95.77
         25 |         65        0.65       96.42
         26 |         65        0.65       97.07
         27 |         38        0.38       97.45
         28 |         43        0.43       97.88
         29 |         29        0.29       98.17
         30 |         27        0.27       98.44
         31 |         37        0.37       98.81
         32 |         29        0.29       99.10
         33 |         18        0.18       99.28
         34 |         14        0.14       99.42
         35 |          5        0.05       99.47
         36 |          8        0.08       99.55
         37 |          6        0.06       99.61
         38 |          6        0.06       99.67
         39 |          8        0.08       99.75
         40 |          6        0.06       99.81
         41 |          3        0.03       99.84
         42 |          5        0.05       99.89
         43 |          2        0.02       99.91
         44 |          3        0.03       99.94
         45 |          1        0.01       99.95
         48 |          1        0.01       99.96
         51 |          1        0.01       99.97
         52 |          1        0.01       99.98
         67 |          1        0.01       99.99
         77 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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