Frequencies for dr_wgt variable in vehicle dataset :

     DRIVER |
     WEIGHT |      Freq.     Percent        Cum.
------------+-----------------------------------
        105 |          1        0.21        0.21
        106 |          1        0.21        0.42
        108 |          1        0.21        0.64
        110 |          1        0.21        0.85
        112 |          1        0.21        1.06
        125 |          2        0.42        1.48
        126 |          1        0.21        1.69
        130 |          3        0.64        2.33
        135 |          7        1.48        3.81
        140 |          4        0.85        4.66
        142 |          2        0.42        5.08
        145 |          3        0.64        5.72
        150 |          5        1.06        6.78
        153 |          1        0.21        6.99
        155 |          2        0.42        7.42
        160 |          9        1.91        9.32
        170 |          3        0.64        9.96
        178 |          1        0.21       10.17
        180 |          3        0.64       10.81
        185 |          1        0.21       11.02
        190 |          2        0.42       11.44
        200 |          3        0.64       12.08
        215 |          1        0.21       12.29
        220 |          3        0.64       12.92
        230 |          1        0.21       13.14
        240 |          2        0.42       13.56
        300 |          1        0.21       13.77
        999 |        407       86.23      100.00
------------+-----------------------------------
      Total |        472      100.00

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