Frequencies for first 10,000 rows of vin_6 variable in vehicle dataset :

      vin_6 |      Freq.     Percent        Cum.
------------+-----------------------------------
            |          9        0.09        0.09
          0 |        484        4.84        4.93
          1 |      2,380       23.80       28.73
          2 |      1,219       12.19       40.92
          3 |        908        9.08       50.00
          4 |        658        6.58       56.58
          5 |      1,241       12.41       68.99
          6 |        579        5.79       74.78
          7 |        428        4.28       79.06
          8 |        449        4.49       83.55
          9 |        734        7.34       90.89
          A |        145        1.45       92.34
          B |        121        1.21       93.55
          C |         94        0.94       94.49
          D |         51        0.51       95.00
          E |         51        0.51       95.51
          F |         18        0.18       95.69
          G |         45        0.45       96.14
          H |         44        0.44       96.58
          J |         18        0.18       96.76
          K |         26        0.26       97.02
          L |         31        0.31       97.33
          M |         25        0.25       97.58
          N |         12        0.12       97.70
          P |         24        0.24       97.94
          Q |          3        0.03       97.97
          R |         45        0.45       98.42
          S |         42        0.42       98.84
          T |         12        0.12       98.96
          U |         16        0.16       99.12
          V |         10        0.10       99.22
          W |          7        0.07       99.29
          X |         24        0.24       99.53
          Y |         10        0.10       99.63
          Z |         37        0.37      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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