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

      gross |
    vehicle |
     weight |
     rating |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      9,233       92.33       92.33
          2 |        127        1.27       93.60
          3 |        622        6.22       99.82
          9 |         18        0.18      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 22 Oct 2016