Frequencies for first 10,000 rows of trkwtvar variable in person dataset :

   Shipping |
     Weight |
   Variance |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      7,216       72.16       72.16
         00 |      1,898       18.98       91.14
         01 |        415        4.15       95.29
         02 |        197        1.97       97.26
         03 |        111        1.11       98.37
         04 |         49        0.49       98.86
         05 |         25        0.25       99.11
         06 |         12        0.12       99.23
         07 |         47        0.47       99.70
         08 |          5        0.05       99.75
         10 |          1        0.01       99.76
         11 |          1        0.01       99.77
         12 |         11        0.11       99.88
         13 |          2        0.02       99.90
         14 |          2        0.02       99.92
         15 |          1        0.01       99.93
         16 |          3        0.03       99.96
         17 |          3        0.03       99.99
         44 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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