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

 Motorcycle |
         CC |
Displacemen |
          t |      Freq.     Percent        Cum.
------------+-----------------------------------
        720 |          2        0.02        0.02
        890 |          3        0.03        0.05
        990 |          2        0.02        0.07
       1220 |          6        0.06        0.13
       1730 |          5        0.05        0.18
       1740 |          3        0.03        0.21
       1980 |          3        0.03        0.24
       2480 |          5        0.05        0.29
       3250 |         25        0.25        0.54
       3470 |          9        0.09        0.63
       3480 |         10        0.10        0.73
       3560 |         23        0.23        0.96
       4080 |         11        0.11        1.07
       4440 |         23        0.23        1.30
       4980 |         10        0.10        1.40
       5440 |         15        0.15        1.55
       7360 |         61        0.61        2.16
       9990 |         11        0.11        2.27
       9999 |      4,453       44.53       46.80
          . |      5,320       53.20      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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