Frequencies for p6 variable in miper dataset :

         p6 |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |        576       69.73       69.73
          1 |          3        0.36       70.10
          2 |         10        1.21       71.31
          3 |          7        0.85       72.15
          4 |          8        0.97       73.12
          5 |         12        1.45       74.58
          6 |          7        0.85       75.42
          7 |          4        0.48       75.91
          8 |          7        0.85       76.76
          9 |         12        1.45       78.21
         10 |          7        0.85       79.06
         11 |          8        0.97       80.02
         12 |          9        1.09       81.11
         13 |          6        0.73       81.84
         14 |         12        1.45       83.29
         15 |         15        1.82       85.11
         16 |         14        1.69       86.80
         17 |          7        0.85       87.65
         18 |          9        1.09       88.74
         19 |          9        1.09       89.83
         20 |          7        0.85       90.68
         21 |          7        0.85       91.53
         22 |          4        0.48       92.01
         23 |          7        0.85       92.86
         24 |         12        1.45       94.31
         25 |          9        1.09       95.40
         26 |          4        0.48       95.88
         27 |          6        0.73       96.61
         28 |          3        0.36       96.97
         29 |          2        0.24       97.22
         30 |          4        0.48       97.70
         31 |          3        0.36       98.06
         32 |          5        0.61       98.67
         33 |          1        0.12       98.79
         34 |          1        0.12       98.91
         35 |          3        0.36       99.27
         36 |          1        0.12       99.39
         38 |          1        0.12       99.52
         39 |          1        0.12       99.64
         40 |          2        0.24       99.88
         41 |          1        0.12      100.00
------------+-----------------------------------
      Total |        826      100.00

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