Frequencies for first 10,000 rows of vin_4 variable in vehicle dataset :

        VIN |
Character(4 |
          ) |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |         42        0.42        0.42
          1 |        393        3.93        4.35
          2 |         20        0.20        4.55
          3 |         32        0.32        4.87
          4 |         35        0.35        5.22
          5 |         69        0.69        5.91
          6 |         14        0.14        6.05
          7 |         29        0.29        6.34
          8 |         12        0.12        6.46
          9 |        368        3.68       10.14
          A |        575        5.75       15.89
          B |        696        6.96       22.85
          C |        786        7.86       30.71
          D |        648        6.48       37.19
          E |        983        9.83       47.02
          F |        654        6.54       53.56
          G |        575        5.75       59.31
          H |        647        6.47       65.78
          J |        338        3.38       69.16
          K |        231        2.31       71.47
          L |        175        1.75       73.22
          M |        123        1.23       74.45
          N |        272        2.72       77.17
          P |        220        2.20       79.37
          R |        470        4.70       84.07
          S |        357        3.57       87.64
          T |         85        0.85       88.49
          U |         69        0.69       89.18
          V |        144        1.44       90.62
          W |        310        3.10       93.72
          X |         33        0.33       94.05
          Y |        234        2.34       96.39
          Z |        361        3.61      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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