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

      vin_4 |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |         40        0.40        0.40
          1 |        283        2.83        3.23
          2 |         29        0.29        3.52
          3 |         26        0.26        3.78
          4 |         35        0.35        4.13
          5 |         77        0.77        4.90
          6 |         14        0.14        5.04
          7 |         32        0.32        5.36
          8 |         14        0.14        5.50
          9 |        431        4.31        9.81
          A |        535        5.35       15.16
          B |        522        5.22       20.38
          C |        855        8.55       28.93
          D |        685        6.85       35.78
          E |      1,138       11.38       47.16
          F |        639        6.39       53.55
          G |        604        6.04       59.59
          H |        636        6.36       65.95
          J |        326        3.26       69.21
          K |        188        1.88       71.09
          L |        236        2.36       73.45
          M |        121        1.21       74.66
          N |        285        2.85       77.51
          P |        213        2.13       79.64
          R |        386        3.86       83.50
          S |        357        3.57       87.07
          T |         76        0.76       87.83
          U |         58        0.58       88.41
          V |        196        1.96       90.37
          W |        322        3.22       93.59
          X |         44        0.44       94.03
          Y |        251        2.51       96.54
          Z |        346        3.46      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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