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

      vin_7 |      Freq.     Percent        Cum.
------------+-----------------------------------
            |         32        0.32        0.32
          0 |        521        5.21        5.53
          1 |      1,367       13.67       19.20
          2 |        928        9.28       28.48
          3 |        702        7.02       35.50
          4 |      1,506       15.06       50.56
          5 |        861        8.61       59.17
          6 |        831        8.31       67.48
          7 |        500        5.00       72.48
          8 |        465        4.65       77.13
          9 |      1,105       11.05       88.18
          A |         79        0.79       88.97
          B |         28        0.28       89.25
          C |         91        0.91       90.16
          D |         37        0.37       90.53
          E |         49        0.49       91.02
          F |         59        0.59       91.61
          G |         42        0.42       92.03
          H |         46        0.46       92.49
          J |         46        0.46       92.95
          K |         23        0.23       93.18
          L |        106        1.06       94.24
          M |         44        0.44       94.68
          N |         23        0.23       94.91
          P |         33        0.33       95.24
          Q |         10        0.10       95.34
          R |         47        0.47       95.81
          S |         60        0.60       96.41
          T |         10        0.10       96.51
          U |         28        0.28       96.79
          V |         23        0.23       97.02
          W |         21        0.21       97.23
          X |         46        0.46       97.69
          Y |        130        1.30       98.99
          Z |        101        1.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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