Frequencies for whlbs_lg variable in vehicle dataset :

    WHLBASE |
  LONG-AUTO |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |        474       65.38       65.38
        957 |          2        0.28       65.66
        976 |          1        0.14       65.79
       1139 |          1        0.14       65.93
       1140 |          3        0.41       66.34
       1175 |          2        0.28       66.62
       1190 |          1        0.14       66.76
       1196 |          1        0.14       66.90
       1239 |          1        0.14       67.03
       1250 |          1        0.14       67.17
       1276 |          1        0.14       67.31
       1315 |          2        0.28       67.59
       1330 |          3        0.41       68.00
       1380 |          4        0.55       68.55
       1390 |          2        0.28       68.83
       1460 |          1        0.14       68.97
       1500 |          1        0.14       69.10
       1550 |          2        0.28       69.38
       1575 |          1        0.14       69.52
       1580 |          1        0.14       69.66
       1608 |          1        0.14       69.79
       1610 |          3        0.41       70.21
       1760 |          1        0.14       70.34
       2010 |          1        0.14       70.48
       2400 |          1        0.14       70.62
       2440 |          1        0.14       70.76
       2540 |          2        0.28       71.03
       2560 |          1        0.14       71.17
       2600 |          1        0.14       71.31
       2650 |          1        0.14       71.45
       2750 |          1        0.14       71.59
       2760 |          1        0.14       71.72
       9999 |        173       23.86       95.59
          . |         32        4.41      100.00
------------+-----------------------------------
      Total |        725      100.00

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