Frequencies for first 10,000 rows of vin_1 variable in vehicle dataset :

        VIN |
Character(1 |
          ) |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |         13        0.13        0.13
          1 |      4,874       48.74       48.87
          2 |        949        9.49       58.36
          3 |        496        4.96       63.32
          4 |        576        5.76       69.08
          5 |        355        3.55       72.63
          6 |         12        0.12       72.75
          7 |          1        0.01       72.76
          8 |          2        0.02       72.78
          9 |        367        3.67       76.45
          A |          4        0.04       76.49
          B |          4        0.04       76.53
          C |         20        0.20       76.73
          D |          2        0.02       76.75
          E |          2        0.02       76.77
          F |         14        0.14       76.91
          G |          1        0.01       76.92
          H |          2        0.02       76.94
          J |      1,677       16.77       93.71
          K |        231        2.31       96.02
          L |         18        0.18       96.20
          M |          4        0.04       96.24
          N |          2        0.02       96.26
          P |          2        0.02       96.28
          R |          7        0.07       96.35
          S |         52        0.52       96.87
          T |          4        0.04       96.91
          U |          2        0.02       96.93
          V |         10        0.10       97.03
          W |        228        2.28       99.31
          X |          1        0.01       99.32
          Y |         42        0.42       99.74
          Z |         26        0.26      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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