Frequencies for first 10,000 rows of p2 variable in miper dataset :

         p2 |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      6,598       65.98       65.98
          1 |         27        0.27       66.25
          2 |         71        0.71       66.96
          3 |         56        0.56       67.52
          4 |         74        0.74       68.26
          5 |         76        0.76       69.02
          6 |         93        0.93       69.95
          7 |        103        1.03       70.98
          8 |        105        1.05       72.03
          9 |        130        1.30       73.33
         10 |        122        1.22       74.55
         11 |        124        1.24       75.79
         12 |        149        1.49       77.28
         13 |        147        1.47       78.75
         14 |        169        1.69       80.44
         15 |        165        1.65       82.09
         16 |        165        1.65       83.74
         17 |        152        1.52       85.26
         18 |        186        1.86       87.12
         19 |        153        1.53       88.65
         20 |        143        1.43       90.08
         21 |        112        1.12       91.20
         22 |        122        1.22       92.42
         23 |        102        1.02       93.44
         24 |        112        1.12       94.56
         25 |         87        0.87       95.43
         26 |         88        0.88       96.31
         27 |         53        0.53       96.84
         28 |         50        0.50       97.34
         29 |         36        0.36       97.70
         30 |         25        0.25       97.95
         31 |         44        0.44       98.39
         32 |         26        0.26       98.65
         33 |         33        0.33       98.98
         34 |         17        0.17       99.15
         35 |         17        0.17       99.32
         36 |         14        0.14       99.46
         37 |          9        0.09       99.55
         38 |          8        0.08       99.63
         39 |         10        0.10       99.73
         40 |          3        0.03       99.76
         41 |          6        0.06       99.82
         42 |          1        0.01       99.83
         43 |          7        0.07       99.90
         44 |          1        0.01       99.91
         46 |          1        0.01       99.92
         48 |          2        0.02       99.94
         50 |          1        0.01       99.95
         52 |          1        0.01       99.96
         53 |          2        0.02       99.98
         55 |          1        0.01       99.99
         70 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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