Frequencies for first 10,000 rows of vin_8 variable in vehicle dataset :

        vin |
character(8 |
          ) |      Freq.     Percent        Cum.
------------+-----------------------------------
            |          6        0.06        0.06
          0 |        219        2.19        2.25
          1 |        643        6.43        8.68
          2 |        253        2.53       11.21
          3 |        370        3.70       14.91
          4 |        393        3.93       18.84
          5 |        404        4.04       22.88
          6 |        234        2.34       25.22
          7 |        192        1.92       27.14
          8 |        152        1.52       28.66
          9 |        395        3.95       32.61
          A |        409        4.09       36.70
          B |        231        2.31       39.01
          C |        304        3.04       42.05
          D |        361        3.61       45.66
          E |        637        6.37       52.03
          F |        275        2.75       54.78
          G |        194        1.94       56.72
          H |        203        2.03       58.75
          J |        146        1.46       60.21
          K |        528        5.28       65.49
          L |        195        1.95       67.44
          M |        112        1.12       68.56
          N |        353        3.53       72.09
          P |        254        2.54       74.63
          R |        347        3.47       78.10
          S |        334        3.34       81.44
          T |        285        2.85       84.29
          U |        216        2.16       86.45
          V |        238        2.38       88.83
          W |        364        3.64       92.47
          X |        356        3.56       96.03
          Y |        248        2.48       98.51
          Z |        149        1.49      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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