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

        VIN |
Character(4 |
          ) |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |         44        0.44        0.44
          1 |        367        3.67        4.11
          2 |         14        0.14        4.25
          3 |         15        0.15        4.40
          4 |         32        0.32        4.72
          5 |         64        0.64        5.36
          6 |         11        0.11        5.47
          7 |         20        0.20        5.67
          8 |          8        0.08        5.75
          9 |        371        3.71        9.46
          A |        573        5.73       15.19
          B |        711        7.11       22.30
          C |        802        8.02       30.32
          D |        613        6.13       36.45
          E |      1,025       10.25       46.70
          F |        719        7.19       53.89
          G |        598        5.98       59.87
          H |        639        6.39       66.26
          J |        314        3.14       69.40
          K |        222        2.22       71.62
          L |        190        1.90       73.52
          M |        109        1.09       74.61
          N |        280        2.80       77.41
          P |        186        1.86       79.27
          R |        426        4.26       83.53
          S |        312        3.12       86.65
          T |         92        0.92       87.57
          U |         62        0.62       88.19
          V |        175        1.75       89.94
          W |        323        3.23       93.17
          X |         33        0.33       93.50
          Y |        242        2.42       95.92
          Z |        408        4.08      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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