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

        vin |
character(1 |
         2) |      Freq.     Percent        Cum.
------------+-----------------------------------
            |         61        0.61        0.61
          0 |      1,823       18.23       18.84
          1 |      2,017       20.17       39.01
          2 |      1,217       12.17       51.18
          3 |        744        7.44       58.62
          4 |        458        4.58       63.20
          5 |        711        7.11       70.31
          6 |        611        6.11       76.42
          7 |        330        3.30       79.72
          8 |        202        2.02       81.74
          9 |        489        4.89       86.63
          A |        456        4.56       91.19
          B |        332        3.32       94.51
          C |        122        1.22       95.73
          D |         83        0.83       96.56
          E |         21        0.21       96.77
          F |         50        0.50       97.27
          G |         12        0.12       97.39
          H |         10        0.10       97.49
          J |         52        0.52       98.01
          K |         12        0.12       98.13
          L |         11        0.11       98.24
          M |         46        0.46       98.70
          N |         11        0.11       98.81
          P |         12        0.12       98.93
          R |          5        0.05       98.98
          S |         12        0.12       99.10
          T |          5        0.05       99.15
          U |         10        0.10       99.25
          V |         22        0.22       99.47
          W |         11        0.11       99.58
          X |         17        0.17       99.75
          Y |         13        0.13       99.88
          Z |         12        0.12      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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