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

 Motorcycle |
         CC |
Displacemen |
          t |      Freq.     Percent        Cum.
------------+-----------------------------------
        720 |          1        0.01        0.01
        890 |          3        0.03        0.04
        990 |          4        0.04        0.08
       1220 |          3        0.03        0.11
       1230 |          1        0.01        0.12
       1610 |          1        0.01        0.13
       1730 |          5        0.05        0.18
       1740 |          1        0.01        0.19
       2480 |          1        0.01        0.20
       3250 |         25        0.25        0.45
       3470 |         13        0.13        0.58
       3480 |          9        0.09        0.67
       3560 |          8        0.08        0.75
       4080 |          1        0.01        0.76
       4440 |         16        0.16        0.92
       4980 |         12        0.12        1.04
       5440 |         10        0.10        1.14
       7360 |         54        0.54        1.68
       9990 |          3        0.03        1.71
       9999 |      4,733       47.33       49.04
          . |      5,096       50.96      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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