Frequencies for first 10,000 rows of p3 variable in miper dataset :

         p3 |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      7,353       73.53       73.53
          1 |         44        0.44       73.97
          2 |         62        0.62       74.59
          3 |         58        0.58       75.17
          4 |         53        0.53       75.70
          5 |         62        0.62       76.32
          6 |         60        0.60       76.92
          7 |         77        0.77       77.69
          8 |         96        0.96       78.65
          9 |         90        0.90       79.55
         10 |         97        0.97       80.52
         11 |         84        0.84       81.36
         12 |        114        1.14       82.50
         13 |        129        1.29       83.79
         14 |        112        1.12       84.91
         15 |        114        1.14       86.05
         16 |        107        1.07       87.12
         17 |        126        1.26       88.38
         18 |        121        1.21       89.59
         19 |        115        1.15       90.74
         20 |        113        1.13       91.87
         21 |        104        1.04       92.91
         22 |         94        0.94       93.85
         23 |         75        0.75       94.60
         24 |         72        0.72       95.32
         25 |         69        0.69       96.01
         26 |         55        0.55       96.56
         27 |         49        0.49       97.05
         28 |         41        0.41       97.46
         29 |         36        0.36       97.82
         30 |         30        0.30       98.12
         31 |         26        0.26       98.38
         32 |         27        0.27       98.65
         33 |         24        0.24       98.89
         34 |         18        0.18       99.07
         35 |         17        0.17       99.24
         36 |         19        0.19       99.43
         37 |         11        0.11       99.54
         38 |          5        0.05       99.59
         39 |          8        0.08       99.67
         40 |          9        0.09       99.76
         41 |          3        0.03       99.79
         42 |          4        0.04       99.83
         43 |          4        0.04       99.87
         44 |          4        0.04       99.91
         45 |          4        0.04       99.95
         47 |          1        0.01       99.96
         48 |          2        0.02       99.98
         51 |          1        0.01       99.99
         52 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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