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

      vin_6 |      Freq.     Percent        Cum.
------------+-----------------------------------
            |          2        0.02        0.02
          0 |        424        4.24        4.26
          1 |      2,503       25.03       29.29
          2 |      1,243       12.43       41.72
          3 |        851        8.51       50.23
          4 |        727        7.27       57.50
          5 |      1,497       14.97       72.47
          6 |        517        5.17       77.64
          7 |        432        4.32       81.96
          8 |        366        3.66       85.62
          9 |        608        6.08       91.70
          A |        122        1.22       92.92
          B |        138        1.38       94.30
          C |         60        0.60       94.90
          D |         55        0.55       95.45
          E |         35        0.35       95.80
          F |         24        0.24       96.04
          G |         23        0.23       96.27
          H |         50        0.50       96.77
          J |         25        0.25       97.02
          K |         12        0.12       97.14
          L |         16        0.16       97.30
          M |         44        0.44       97.74
          N |          8        0.08       97.82
          P |         14        0.14       97.96
          Q |          1        0.01       97.97
          R |         38        0.38       98.35
          S |         58        0.58       98.93
          T |         11        0.11       99.04
          U |         12        0.12       99.16
          V |         13        0.13       99.29
          W |         25        0.25       99.54
          X |         16        0.16       99.70
          Y |          4        0.04       99.74
          Z |         26        0.26      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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