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

   Shipping |
     Weight |
   Variance |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      7,020       70.20       70.20
         00 |      2,055       20.55       90.75
         01 |        423        4.23       94.98
         02 |        219        2.19       97.17
         03 |        115        1.15       98.32
         04 |         47        0.47       98.79
         05 |         37        0.37       99.16
         06 |         22        0.22       99.38
         07 |         35        0.35       99.73
         08 |          5        0.05       99.78
         09 |          1        0.01       99.79
         10 |          2        0.02       99.81
         11 |          1        0.01       99.82
         12 |          4        0.04       99.86
         13 |          3        0.03       99.89
         14 |          3        0.03       99.92
         15 |          1        0.01       99.93
         16 |          3        0.03       99.96
         17 |          2        0.02       99.98
         44 |          2        0.02      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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