Frequencies for first 10,000 rows of vin_12 variable in vehicle dataset :

        vin |
character(1 |
         2) |      Freq.     Percent        Cum.
------------+-----------------------------------
            |         62        0.62        0.62
          0 |      1,872       18.72       19.34
          1 |      2,093       20.93       40.27
          2 |      1,195       11.95       52.22
          3 |        733        7.33       59.55
          4 |        423        4.23       63.78
          5 |        720        7.20       70.98
          6 |        599        5.99       76.97
          7 |        299        2.99       79.96
          8 |        226        2.26       82.22
          9 |        440        4.40       86.62
          A |        479        4.79       91.41
          B |        328        3.28       94.69
          C |        129        1.29       95.98
          D |         83        0.83       96.81
          E |         32        0.32       97.13
          F |         25        0.25       97.38
          G |          8        0.08       97.46
          H |         12        0.12       97.58
          J |         38        0.38       97.96
          K |          9        0.09       98.05
          L |         15        0.15       98.20
          M |         54        0.54       98.74
          N |          9        0.09       98.83
          O |          1        0.01       98.84
          P |         10        0.10       98.94
          R |          7        0.07       99.01
          S |         10        0.10       99.11
          T |          6        0.06       99.17
          U |         13        0.13       99.30
          V |         14        0.14       99.44
          W |         17        0.17       99.61
          X |         16        0.16       99.77
          Y |         13        0.13       99.90
          Z |         10        0.10      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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