Frequencies for first 10,000 rows of p1 variable in miper dataset :

         p1 |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      7,527       75.27       75.27
          1 |         40        0.40       75.67
          2 |         73        0.73       76.40
          3 |         55        0.55       76.95
          4 |         56        0.56       77.51
          5 |         49        0.49       78.00
          6 |         67        0.67       78.67
          7 |         74        0.74       79.41
          8 |         85        0.85       80.26
          9 |         90        0.90       81.16
         10 |         90        0.90       82.06
         11 |        112        1.12       83.18
         12 |        124        1.24       84.42
         13 |         96        0.96       85.38
         14 |        122        1.22       86.60
         15 |        103        1.03       87.63
         16 |         96        0.96       88.59
         17 |        100        1.00       89.59
         18 |        100        1.00       90.59
         19 |         85        0.85       91.44
         20 |         84        0.84       92.28
         21 |        103        1.03       93.31
         22 |         96        0.96       94.27
         23 |         71        0.71       94.98
         24 |         76        0.76       95.74
         25 |         67        0.67       96.41
         26 |         62        0.62       97.03
         27 |         48        0.48       97.51
         28 |         42        0.42       97.93
         29 |         38        0.38       98.31
         30 |         24        0.24       98.55
         31 |         23        0.23       98.78
         32 |         19        0.19       98.97
         33 |         15        0.15       99.12
         34 |         12        0.12       99.24
         35 |         14        0.14       99.38
         36 |         15        0.15       99.53
         37 |         14        0.14       99.67
         38 |          7        0.07       99.74
         39 |          6        0.06       99.80
         40 |          3        0.03       99.83
         41 |          3        0.03       99.86
         42 |          4        0.04       99.90
         43 |          1        0.01       99.91
         44 |          1        0.01       99.92
         47 |          2        0.02       99.94
         48 |          1        0.01       99.95
         49 |          4        0.04       99.99
         51 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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