Frequencies for vin_6 variable in vehicle dataset :

      vin_6 |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |         47        7.51        7.51
          1 |        101       16.13       23.64
          2 |         73       11.66       35.30
          3 |         87       13.90       49.20
          4 |         48        7.67       56.87
          5 |         65       10.38       67.25
          6 |         36        5.75       73.00
          7 |         35        5.59       78.59
          8 |         25        3.99       82.59
          9 |         81       12.94       95.53
          A |          6        0.96       96.49
          B |          1        0.16       96.65
          C |          3        0.48       97.12
          D |          2        0.32       97.44
          E |          1        0.16       97.60
          G |          4        0.64       98.24
          H |          2        0.32       98.56
          J |          1        0.16       98.72
          K |          2        0.32       99.04
          M |          1        0.16       99.20
          S |          2        0.32       99.52
          U |          1        0.16       99.68
          Z |          2        0.32      100.00
------------+-----------------------------------
      Total |        626      100.00

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