Frequencies for mcycl_ds variable in vehicle dataset :

         CC |
DISPLACEMEN |
          T |      Freq.     Percent        Cum.
------------+-----------------------------------
         49 |          1        0.13        0.13
        249 |          1        0.13        0.26
        250 |          4        0.52        0.79
        450 |          2        0.26        1.05
        599 |          1        0.13        1.18
        600 |          8        1.05        2.23
        650 |          1        0.13        2.36
        749 |          1        0.13        2.49
        750 |          2        0.26        2.75
        900 |          1        0.13        2.88
       1000 |          1        0.13        3.01
       1074 |          1        0.13        3.14
       1127 |          1        0.13        3.27
       1340 |          1        0.13        3.40
       9999 |         98       12.83       16.23
          . |        640       83.77      100.00
------------+-----------------------------------
      Total |        764      100.00

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