Frequencies for vin_3 variable in vehicle dataset :

      vin_3 |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |         23        3.01        3.01
          1 |        130       17.02       20.03
          2 |        160       20.94       40.97
          3 |         85       11.13       52.09
          4 |         51        6.68       58.77
          5 |          7        0.92       59.69
          6 |          6        0.79       60.47
          7 |         13        1.70       62.17
          8 |         13        1.70       63.87
          9 |         90       11.78       75.65
          A |         26        3.40       79.06
          B |         15        1.96       81.02
          C |         13        1.70       82.72
          D |         11        1.44       84.16
          E |          3        0.39       84.55
          F |          8        1.05       85.60
          G |         15        1.96       87.57
          H |         30        3.93       91.49
          K |          5        0.65       92.15
          L |          2        0.26       92.41
          M |         17        2.23       94.63
          N |          5        0.65       95.29
          O |          1        0.13       95.42
          Q |          1        0.13       95.55
          S |          1        0.13       95.68
          T |         29        3.80       99.48
          U |          1        0.13       99.61
          V |          2        0.26       99.87
          W |          1        0.13      100.00
------------+-----------------------------------
      Total |        764      100.00

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