Frequencies for first 10,000 rows of vin_5 variable in vehicle dataset :

        vin |
character(5 |
          ) |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |         45        0.45        0.45
          1 |         32        0.32        0.77
          2 |         36        0.36        1.13
          3 |         12        0.12        1.25
          4 |         44        0.44        1.69
          5 |         16        0.16        1.85
          6 |         13        0.13        1.98
          7 |         25        0.25        2.23
          8 |         10        0.10        2.33
          9 |        387        3.87        6.20
          A |        569        5.69       11.89
          B |        448        4.48       16.37
          C |        946        9.46       25.83
          D |        568        5.68       31.51
          E |        339        3.39       34.90
          F |        625        6.25       41.15
          G |        442        4.42       45.57
          H |        151        1.51       47.08
          J |        301        3.01       50.09
          K |        636        6.36       56.45
          L |        438        4.38       60.83
          M |        371        3.71       64.54
          N |        387        3.87       68.41
          P |        569        5.69       74.10
          R |        396        3.96       78.06
          S |        381        3.81       81.87
          T |        301        3.01       84.88
          U |        572        5.72       90.60
          V |        115        1.15       91.75
          W |        263        2.63       94.38
          X |        343        3.43       97.81
          Y |        114        1.14       98.95
          Z |        105        1.05      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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