Frequencies for whlbs_lg variable in vehicle dataset :

    WHLBASE |
  LONG-AUTO |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |        411       65.65       65.65
        931 |          1        0.16       65.81
        984 |          1        0.16       65.97
       1125 |          1        0.16       66.13
       1160 |          1        0.16       66.29
       1175 |          5        0.80       67.09
       1179 |          2        0.32       67.41
       1250 |          2        0.32       67.73
       1315 |          2        0.32       68.05
       1330 |          4        0.64       68.69
       1380 |          1        0.16       68.85
       1385 |          1        0.16       69.01
       1547 |          1        0.16       69.17
       1550 |          1        0.16       69.33
       1570 |          1        0.16       69.49
       1571 |          1        0.16       69.65
       1610 |          2        0.32       69.97
       1665 |          1        0.16       70.13
       1724 |          1        0.16       70.29
       1760 |          1        0.16       70.45
       2220 |          1        0.16       70.61
       2500 |          2        0.32       70.93
       2540 |          3        0.48       71.41
       2590 |          1        0.16       71.57
       2600 |          1        0.16       71.73
       2810 |          1        0.16       71.88
       9999 |        121       19.33       91.21
          . |         55        8.79      100.00
------------+-----------------------------------
      Total |        626      100.00

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