Frequencies for first 10,000 rows of vin_3 variable in vehicle dataset :

      vin_3 |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |        275        2.75        2.75
          1 |      1,316       13.16       15.91
          2 |      1,059       10.59       26.50
          3 |        840        8.40       34.90
          4 |        982        9.82       44.72
          5 |        259        2.59       47.31
          6 |        514        5.14       52.45
          7 |        241        2.41       54.86
          8 |        319        3.19       58.05
          9 |        512        5.12       63.17
          A |        793        7.93       71.10
          B |        136        1.36       72.46
          C |        400        4.00       76.46
          D |        188        1.88       78.34
          E |        176        1.76       80.10
          F |         67        0.67       80.77
          G |         68        0.68       81.45
          H |        101        1.01       82.46
          J |         18        0.18       82.64
          K |         75        0.75       83.39
          L |        146        1.46       84.85
          M |        344        3.44       88.29
          N |        124        1.24       89.53
          P |         63        0.63       90.16
          Q |          4        0.04       90.20
          R |         33        0.33       90.53
          S |        106        1.06       91.59
          T |        496        4.96       96.55
          U |        136        1.36       97.91
          V |         40        0.40       98.31
          W |         78        0.78       99.09
          X |         17        0.17       99.26
          Y |         64        0.64       99.90
          Z |         10        0.10      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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