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

        vin |
character(6 |
          ) |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |        446        4.46        4.46
          1 |      2,162       21.62       26.08
          2 |      1,158       11.58       37.66
          3 |        971        9.71       47.37
          4 |        911        9.11       56.48
          5 |      1,266       12.66       69.14
          6 |        581        5.81       74.95
          7 |        506        5.06       80.01
          8 |        272        2.72       82.73
          9 |        527        5.27       88.00
          A |        138        1.38       89.38
          B |        202        2.02       91.40
          C |         94        0.94       92.34
          D |         52        0.52       92.86
          E |         70        0.70       93.56
          F |         39        0.39       93.95
          G |         33        0.33       94.28
          H |         40        0.40       94.68
          J |         36        0.36       95.04
          K |         12        0.12       95.16
          L |         50        0.50       95.66
          M |         56        0.56       96.22
          N |         24        0.24       96.46
          O |          1        0.01       96.47
          P |         44        0.44       96.91
          Q |          1        0.01       96.92
          R |         48        0.48       97.40
          S |         75        0.75       98.15
          T |         17        0.17       98.32
          U |         18        0.18       98.50
          V |         23        0.23       98.73
          W |         42        0.42       99.15
          X |         45        0.45       99.60
          Y |         14        0.14       99.74
          Z |         26        0.26      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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