Frequencies for first 10,000 rows of vin_6 variable in vehicle dataset :

        VIN |
Character(6 |
          ) |      Freq.     Percent        Cum.
------------+-----------------------------------
            |          4        0.04        0.04
          0 |        454        4.54        4.58
          1 |      2,400       24.00       28.58
          2 |      1,107       11.07       39.65
          3 |        971        9.71       49.36
          4 |        867        8.67       58.03
          5 |      1,287       12.87       70.90
          6 |        575        5.75       76.65
          7 |        486        4.86       81.51
          8 |        273        2.73       84.24
          9 |        544        5.44       89.68
          A |        137        1.37       91.05
          B |        192        1.92       92.97
          C |         76        0.76       93.73
          D |         58        0.58       94.31
          E |         34        0.34       94.65
          F |         21        0.21       94.86
          G |         21        0.21       95.07
          H |         42        0.42       95.49
          J |         39        0.39       95.88
          K |         23        0.23       96.11
          L |         35        0.35       96.46
          M |         49        0.49       96.95
          N |         18        0.18       97.13
          P |         22        0.22       97.35
          R |         63        0.63       97.98
          S |         67        0.67       98.65
          T |          8        0.08       98.73
          U |         18        0.18       98.91
          V |         15        0.15       99.06
          W |         48        0.48       99.54
          X |         19        0.19       99.73
          Y |          9        0.09       99.82
          Z |         18        0.18      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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