Frequencies for first 10,000 rows of vin_7 variable in vehicle dataset :

      vin_7 |      Freq.     Percent        Cum.
------------+-----------------------------------
            |          5        0.05        0.05
          0 |        365        3.65        3.70
          1 |      1,051       10.51       14.21
          2 |      1,584       15.84       30.05
          3 |      1,058       10.58       40.63
          4 |      1,010       10.10       50.73
          5 |        746        7.46       58.19
          6 |      1,025       10.25       68.44
          7 |        445        4.45       72.89
          8 |        728        7.28       80.17
          9 |      1,030       10.30       90.47
          A |        106        1.06       91.53
          B |         68        0.68       92.21
          C |        145        1.45       93.66
          D |         70        0.70       94.36
          E |         63        0.63       94.99
          F |         25        0.25       95.24
          G |         34        0.34       95.58
          H |         25        0.25       95.83
          J |         27        0.27       96.10
          K |         24        0.24       96.34
          L |         50        0.50       96.84
          M |         21        0.21       97.05
          N |          7        0.07       97.12
          P |         58        0.58       97.70
          R |          9        0.09       97.79
          S |          8        0.08       97.87
          T |         17        0.17       98.04
          U |         12        0.12       98.16
          V |         24        0.24       98.40
          W |         51        0.51       98.91
          X |         10        0.10       99.01
          Y |         70        0.70       99.71
          Z |         29        0.29      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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