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

      gross |
    vehicle |
     weight |
     rating |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      9,201       92.01       92.01
          1 |          7        0.07       92.08
          2 |        165        1.65       93.73
          3 |        601        6.01       99.74
          8 |          2        0.02       99.76
          9 |         24        0.24      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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