Frequencies for first 10,000 rows of vin_8 variable in vehicle dataset :

      vin_8 |      Freq.     Percent        Cum.
------------+-----------------------------------
            |         88        0.88        0.88
          0 |        277        2.77        3.65
          1 |        695        6.95       10.60
          2 |        324        3.24       13.84
          3 |        452        4.52       18.36
          4 |        484        4.84       23.20
          5 |        293        2.93       26.13
          6 |        237        2.37       28.50
          7 |        155        1.55       30.05
          8 |        150        1.50       31.55
          9 |        564        5.64       37.19
          A |        401        4.01       41.20
          B |        362        3.62       44.82
          C |        220        2.20       47.02
          D |        271        2.71       49.73
          E |        378        3.78       53.51
          F |        226        2.26       55.77
          G |        158        1.58       57.35
          H |        324        3.24       60.59
          J |        216        2.16       62.75
          K |        423        4.23       66.98
          L |        136        1.36       68.34
          M |        169        1.69       70.03
          N |        244        2.44       72.47
          P |        203        2.03       74.50
          R |        342        3.42       77.92
          S |        475        4.75       82.67
          T |        226        2.26       84.93
          U |        223        2.23       87.16
          V |         42        0.42       87.58
          W |        354        3.54       91.12
          X |        440        4.40       95.52
          Y |        253        2.53       98.05
          Z |        195        1.95      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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