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

         p7 |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      6,386       63.86       63.86
          1 |         47        0.47       64.33
          2 |         78        0.78       65.11
          3 |         89        0.89       66.00
          4 |         74        0.74       66.74
          5 |         89        0.89       67.63
          6 |        112        1.12       68.75
          7 |        112        1.12       69.87
          8 |        101        1.01       70.88
          9 |        129        1.29       72.17
         10 |        106        1.06       73.23
         11 |        148        1.48       74.71
         12 |        147        1.47       76.18
         13 |        163        1.63       77.81
         14 |        181        1.81       79.62
         15 |        163        1.63       81.25
         16 |        200        2.00       83.25
         17 |        178        1.78       85.03
         18 |        164        1.64       86.67
         19 |        156        1.56       88.23
         20 |        155        1.55       89.78
         21 |        134        1.34       91.12
         22 |        140        1.40       92.52
         23 |        100        1.00       93.52
         24 |         89        0.89       94.41
         25 |         85        0.85       95.26
         26 |         88        0.88       96.14
         27 |         73        0.73       96.87
         28 |         65        0.65       97.52
         29 |         40        0.40       97.92
         30 |         33        0.33       98.25
         31 |         34        0.34       98.59
         32 |         29        0.29       98.88
         33 |         21        0.21       99.09
         34 |         23        0.23       99.32
         35 |         11        0.11       99.43
         36 |          8        0.08       99.51
         37 |         10        0.10       99.61
         38 |          3        0.03       99.64
         39 |         10        0.10       99.74
         40 |          4        0.04       99.78
         41 |          3        0.03       99.81
         42 |          2        0.02       99.83
         43 |          3        0.03       99.86
         44 |          2        0.02       99.88
         45 |          1        0.01       99.89
         46 |          2        0.02       99.91
         47 |          1        0.01       99.92
         48 |          2        0.02       99.94
         49 |          3        0.03       99.97
         51 |          1        0.01       99.98
         59 |          2        0.02      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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