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

      vin_6 |      Freq.     Percent        Cum.
------------+-----------------------------------
            |          5        0.05        0.05
          0 |        362        3.62        3.67
          1 |      2,521       25.21       28.88
          2 |      1,172       11.72       40.60
          3 |        908        9.08       49.68
          4 |        722        7.22       56.90
          5 |      1,411       14.11       71.01
          6 |        588        5.88       76.89
          7 |        471        4.71       81.60
          8 |        323        3.23       84.83
          9 |        624        6.24       91.07
          A |        124        1.24       92.31
          B |        179        1.79       94.10
          C |         64        0.64       94.74
          D |         51        0.51       95.25
          E |         23        0.23       95.48
          F |         20        0.20       95.68
          G |         27        0.27       95.95
          H |         42        0.42       96.37
          J |         42        0.42       96.79
          K |         12        0.12       96.91
          L |         23        0.23       97.14
          M |         40        0.40       97.54
          N |          9        0.09       97.63
          P |         13        0.13       97.76
          R |         29        0.29       98.05
          S |         40        0.40       98.45
          T |         12        0.12       98.57
          U |         29        0.29       98.86
          V |         12        0.12       98.98
          W |         28        0.28       99.26
          X |         37        0.37       99.63
          Y |          8        0.08       99.71
          Z |         29        0.29      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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