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

  Wheelbase |
  Long-Auto |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      3,156       31.56       31.56
        898 |         23        0.23       31.79
        948 |         35        0.35       32.14
        949 |          3        0.03       32.17
        953 |         61        0.61       32.78
        964 |          4        0.04       32.82
        966 |          3        0.03       32.85
        967 |          2        0.02       32.87
        969 |          7        0.07       32.94
        996 |         25        0.25       33.19
       1001 |          2        0.02       33.21
       1099 |         49        0.49       33.70
       1100 |          4        0.04       33.74
       1110 |         19        0.19       33.93
       1125 |         11        0.11       34.04
       1127 |          7        0.07       34.11
       1130 |         22        0.22       34.33
       1150 |          9        0.09       34.42
       1160 |        276        2.76       37.18
       1170 |         50        0.50       37.68
       1174 |          1        0.01       37.69
       1175 |          7        0.07       37.76
       1180 |         56        0.56       38.32
       1190 |         22        0.22       38.54
       1200 |         10        0.10       38.64
       1210 |          6        0.06       38.70
       1220 |         17        0.17       38.87
       1235 |          2        0.02       38.89
       1240 |         36        0.36       39.25
       1250 |         77        0.77       40.02
       1270 |          8        0.08       40.10
       1380 |          1        0.01       40.11
       1645 |          2        0.02       40.13
       9999 |      3,756       37.56       77.69
          . |      2,231       22.31      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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