Frequencies for first 10,000 rows of vin_7 variable in vehicle dataset :

      vin_7 |      Freq.     Percent        Cum.
------------+-----------------------------------
            |         45        0.45        0.45
          0 |        684        6.84        7.29
          1 |      1,291       12.91       20.20
          2 |        822        8.22       28.42
          3 |        604        6.04       34.46
          4 |      1,319       13.19       47.65
          5 |        683        6.83       54.48
          6 |        682        6.82       61.30
          7 |        598        5.98       67.28
          8 |        525        5.25       72.53
          9 |      1,019       10.19       82.72
          A |        137        1.37       84.09
          B |         56        0.56       84.65
          C |        124        1.24       85.89
          D |         69        0.69       86.58
          E |         40        0.40       86.98
          F |         69        0.69       87.67
          G |         94        0.94       88.61
          H |         66        0.66       89.27
          I |          1        0.01       89.28
          J |         52        0.52       89.80
          K |         50        0.50       90.30
          L |        129        1.29       91.59
          M |         47        0.47       92.06
          N |         45        0.45       92.51
          P |         47        0.47       92.98
          Q |         27        0.27       93.25
          R |         87        0.87       94.12
          S |        105        1.05       95.17
          T |         15        0.15       95.32
          U |         51        0.51       95.83
          V |         26        0.26       96.09
          W |         45        0.45       96.54
          X |         61        0.61       97.15
          Y |        115        1.15       98.30
          Z |        170        1.70      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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