Frequencies for dr_wgt variable in vehicle dataset :

     DRIVER |
     WEIGHT |      Freq.     Percent        Cum.
------------+-----------------------------------
         98 |          1        0.16        0.16
        115 |          2        0.32        0.48
        119 |          1        0.16        0.64
        120 |          1        0.16        0.80
        125 |          3        0.48        1.28
        126 |          1        0.16        1.44
        128 |          1        0.16        1.60
        130 |          5        0.80        2.40
        135 |          1        0.16        2.56
        140 |          6        0.96        3.51
        145 |          1        0.16        3.67
        146 |          1        0.16        3.83
        149 |          1        0.16        3.99
        150 |         11        1.76        5.75
        155 |          2        0.32        6.07
        159 |          1        0.16        6.23
        160 |          5        0.80        7.03
        162 |          1        0.16        7.19
        167 |          1        0.16        7.35
        170 |          5        0.80        8.15
        175 |          1        0.16        8.31
        180 |          5        0.80        9.11
        190 |          1        0.16        9.27
        195 |          1        0.16        9.42
        196 |          1        0.16        9.58
        200 |          5        0.80       10.38
        210 |          4        0.64       11.02
        220 |          1        0.16       11.18
        230 |          1        0.16       11.34
        240 |          1        0.16       11.50
        275 |          1        0.16       11.66
        999 |        552       88.18       99.84
          . |          1        0.16      100.00
------------+-----------------------------------
      Total |        626      100.00

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