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

      vin_7 |      Freq.     Percent        Cum.
------------+-----------------------------------
            |          8        0.08        0.08
          0 |        409        4.09        4.17
          1 |      1,141       11.41       15.58
          2 |      1,568       15.68       31.26
          3 |        938        9.38       40.64
          4 |      1,204       12.04       52.68
          5 |        767        7.67       60.35
          6 |        982        9.82       70.17
          7 |        401        4.01       74.18
          8 |        620        6.20       80.38
          9 |      1,111       11.11       91.49
          A |         65        0.65       92.14
          B |         51        0.51       92.65
          C |         81        0.81       93.46
          D |         25        0.25       93.71
          E |         69        0.69       94.40
          F |         22        0.22       94.62
          G |         16        0.16       94.78
          H |         34        0.34       95.12
          J |         29        0.29       95.41
          K |         10        0.10       95.51
          L |         63        0.63       96.14
          M |         39        0.39       96.53
          N |          7        0.07       96.60
          P |         33        0.33       96.93
          Q |          4        0.04       96.97
          R |         34        0.34       97.31
          S |         23        0.23       97.54
          T |         11        0.11       97.65
          U |         10        0.10       97.75
          V |         39        0.39       98.14
          W |         33        0.33       98.47
          X |         17        0.17       98.64
          Y |         89        0.89       99.53
          Z |         47        0.47      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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