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

      vin_6 |      Freq.     Percent        Cum.
------------+-----------------------------------
            |         62        0.62        0.62
          0 |        905        9.05        9.67
          1 |      1,423       14.23       23.90
          2 |        809        8.09       31.99
          3 |        581        5.81       37.80
          4 |        514        5.14       42.94
          5 |        722        7.22       50.16
          6 |        586        5.86       56.02
          7 |        700        7.00       63.02
          8 |        696        6.96       69.98
          9 |      1,496       14.96       84.94
          A |        114        1.14       86.08
          B |        118        1.18       87.26
          C |         80        0.80       88.06
          D |         79        0.79       88.85
          E |         91        0.91       89.76
          F |         83        0.83       90.59
          G |         60        0.60       91.19
          H |        158        1.58       92.77
          J |         36        0.36       93.13
          K |         50        0.50       93.63
          L |         88        0.88       94.51
          M |         21        0.21       94.72
          N |         39        0.39       95.11
          O |          5        0.05       95.16
          P |         85        0.85       96.01
          Q |          7        0.07       96.08
          R |         53        0.53       96.61
          S |         59        0.59       97.20
          T |         63        0.63       97.83
          U |         37        0.37       98.20
          V |         20        0.20       98.40
          W |         20        0.20       98.60
          X |         18        0.18       98.78
          Y |         33        0.33       99.11
          Z |         89        0.89      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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