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

         p7 |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      6,615       66.15       66.15
          1 |         44        0.44       66.59
          2 |         78        0.78       67.37
          3 |         78        0.78       68.15
          4 |         65        0.65       68.80
          5 |         75        0.75       69.55
          6 |         91        0.91       70.46
          7 |         82        0.82       71.28
          8 |        101        1.01       72.29
          9 |        118        1.18       73.47
         10 |        124        1.24       74.71
         11 |        151        1.51       76.22
         12 |        142        1.42       77.64
         13 |        136        1.36       79.00
         14 |        149        1.49       80.49
         15 |        175        1.75       82.24
         16 |        178        1.78       84.02
         17 |        188        1.88       85.90
         18 |        153        1.53       87.43
         19 |        143        1.43       88.86
         20 |        157        1.57       90.43
         21 |        160        1.60       92.03
         22 |        120        1.20       93.23
         23 |        107        1.07       94.30
         24 |         91        0.91       95.21
         25 |         79        0.79       96.00
         26 |         57        0.57       96.57
         27 |         75        0.75       97.32
         28 |         55        0.55       97.87
         29 |         39        0.39       98.26
         30 |         37        0.37       98.63
         31 |         36        0.36       98.99
         32 |         20        0.20       99.19
         33 |         15        0.15       99.34
         34 |          6        0.06       99.40
         35 |         14        0.14       99.54
         36 |          8        0.08       99.62
         37 |          6        0.06       99.68
         38 |          7        0.07       99.75
         39 |          2        0.02       99.77
         40 |          6        0.06       99.83
         41 |          1        0.01       99.84
         42 |          1        0.01       99.85
         43 |          4        0.04       99.89
         44 |          2        0.02       99.91
         45 |          1        0.01       99.92
         46 |          2        0.02       99.94
         48 |          1        0.01       99.95
         52 |          2        0.02       99.97
         56 |          1        0.01       99.98
         61 |          1        0.01       99.99
         66 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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