Frequencies for first 10,000 rows of vin_3 variable in vehicle dataset :

        vin |
character(3 |
          ) |      Freq.     Percent        Cum.
------------+-----------------------------------
            |          3        0.03        0.03
          0 |         39        0.39        0.42
          1 |      1,102       11.02       11.44
          2 |        393        3.93       15.37
          3 |        447        4.47       19.84
          4 |        798        7.98       27.82
          5 |         28        0.28       28.10
          6 |        225        2.25       30.35
          7 |        223        2.23       32.58
          8 |        249        2.49       35.07
          9 |        489        4.89       39.96
          A |        821        8.21       48.17
          B |        173        1.73       49.90
          C |        448        4.48       54.38
          D |        658        6.58       60.96
          E |        166        1.66       62.62
          F |         95        0.95       63.57
          G |        421        4.21       67.78
          H |        192        1.92       69.70
          J |         40        0.40       70.10
          K |        333        3.33       73.43
          L |         75        0.75       74.18
          M |        457        4.57       78.75
          N |        451        4.51       83.26
          P |        153        1.53       84.79
          R |         31        0.31       85.10
          S |         77        0.77       85.87
          T |        750        7.50       93.37
          U |        190        1.90       95.27
          V |         98        0.98       96.25
          W |        138        1.38       97.63
          X |        159        1.59       99.22
          Y |         47        0.47       99.69
          Z |         31        0.31      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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