Frequencies for first 10,000 rows of vin_8 variable in vehicle dataset :

        vin |
character(8 |
          ) |      Freq.     Percent        Cum.
------------+-----------------------------------
            |         10        0.10        0.10
          0 |        230        2.30        2.40
          1 |        683        6.83        9.23
          2 |        244        2.44       11.67
          3 |        380        3.80       15.47
          4 |        332        3.32       18.79
          5 |        439        4.39       23.18
          6 |        257        2.57       25.75
          7 |        204        2.04       27.79
          8 |        169        1.69       29.48
          9 |        440        4.40       33.88
          A |        384        3.84       37.72
          B |        278        2.78       40.50
          C |        286        2.86       43.36
          D |        313        3.13       46.49
          E |        663        6.63       53.12
          F |        246        2.46       55.58
          G |        253        2.53       58.11
          H |        146        1.46       59.57
          J |        153        1.53       61.10
          K |        520        5.20       66.30
          L |        215        2.15       68.45
          M |         98        0.98       69.43
          N |        300        3.00       72.43
          P |        279        2.79       75.22
          R |        370        3.70       78.92
          S |        265        2.65       81.57
          T |        304        3.04       84.61
          U |        244        2.44       87.05
          V |        236        2.36       89.41
          W |        337        3.37       92.78
          X |        361        3.61       96.39
          Y |        216        2.16       98.55
          Z |        145        1.45      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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