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

  Wheelbase |
  Long-Auto |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      3,230       32.30       32.30
        948 |         15        0.15       32.45
        949 |          3        0.03       32.48
        953 |         66        0.66       33.14
        964 |          7        0.07       33.21
        966 |          7        0.07       33.28
        967 |          1        0.01       33.29
        969 |          8        0.08       33.37
        996 |         22        0.22       33.59
       1001 |          2        0.02       33.61
       1080 |          1        0.01       33.62
       1099 |         56        0.56       34.18
       1100 |          4        0.04       34.22
       1110 |         14        0.14       34.36
       1130 |         18        0.18       34.54
       1150 |         10        0.10       34.64
       1160 |        267        2.67       37.31
       1170 |         67        0.67       37.98
       1175 |          3        0.03       38.01
       1180 |         59        0.59       38.60
       1190 |         23        0.23       38.83
       1200 |          3        0.03       38.86
       1210 |          9        0.09       38.95
       1220 |         17        0.17       39.12
       1235 |          3        0.03       39.15
       1240 |         45        0.45       39.60
       1250 |         72        0.72       40.32
       1645 |          1        0.01       40.33
       9999 |      4,733       47.33       87.66
          . |      1,234       12.34      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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