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

         p7 |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      7,485       74.85       74.85
          1 |         38        0.38       75.23
          2 |         46        0.46       75.69
          3 |         68        0.68       76.37
          4 |         70        0.70       77.07
          5 |         59        0.59       77.66
          6 |         72        0.72       78.38
          7 |         58        0.58       78.96
          8 |         74        0.74       79.70
          9 |         80        0.80       80.50
         10 |         80        0.80       81.30
         11 |         78        0.78       82.08
         12 |        106        1.06       83.14
         13 |         89        0.89       84.03
         14 |         98        0.98       85.01
         15 |        127        1.27       86.28
         16 |        114        1.14       87.42
         17 |        104        1.04       88.46
         18 |        121        1.21       89.67
         19 |         85        0.85       90.52
         20 |         87        0.87       91.39
         21 |         98        0.98       92.37
         22 |         86        0.86       93.23
         23 |         85        0.85       94.08
         24 |         82        0.82       94.90
         25 |         69        0.69       95.59
         26 |         57        0.57       96.16
         27 |         72        0.72       96.88
         28 |         45        0.45       97.33
         29 |         32        0.32       97.65
         30 |         27        0.27       97.92
         31 |         29        0.29       98.21
         32 |         32        0.32       98.53
         33 |         17        0.17       98.70
         34 |         22        0.22       98.92
         35 |         23        0.23       99.15
         36 |         14        0.14       99.29
         37 |         14        0.14       99.43
         38 |         13        0.13       99.56
         39 |          6        0.06       99.62
         40 |          8        0.08       99.70
         41 |          6        0.06       99.76
         42 |          1        0.01       99.77
         43 |          4        0.04       99.81
         44 |          4        0.04       99.85
         45 |          2        0.02       99.87
         46 |          2        0.02       99.89
         47 |          2        0.02       99.91
         48 |          1        0.01       99.92
         49 |          1        0.01       99.93
         61 |          2        0.02       99.95
         63 |          1        0.01       99.96
         64 |          2        0.02       99.98
         73 |          1        0.01       99.99
         76 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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