Frequencies for first 10,000 rows of vin_3 variable in vehicle dataset :

      vin_3 |      Freq.     Percent        Cum.
------------+-----------------------------------
          % |          1        0.01        0.01
          0 |        824        8.24        8.25
          1 |        878        8.78       17.03
          2 |      1,046       10.46       27.49
          3 |        821        8.21       35.70
          4 |      1,275       12.75       48.45
          5 |        808        8.08       56.53
          6 |        887        8.87       65.40
          7 |        442        4.42       69.82
          8 |        603        6.03       75.85
          9 |        882        8.82       84.67
          A |        108        1.08       85.75
          B |         92        0.92       86.67
          C |         57        0.57       87.24
          D |         64        0.64       87.88
          E |        124        1.24       89.12
          F |        112        1.12       90.24
          G |         25        0.25       90.49
          H |         32        0.32       90.81
          I |          4        0.04       90.85
          J |          5        0.05       90.90
          K |         20        0.20       91.10
          L |        323        3.23       94.33
          M |         30        0.30       94.63
          N |         76        0.76       95.39
          O |          5        0.05       95.44
          P |         16        0.16       95.60
          Q |         14        0.14       95.74
          R |         32        0.32       96.06
          S |         99        0.99       97.05
          T |        101        1.01       98.06
          U |         16        0.16       98.22
          V |         39        0.39       98.61
          W |          3        0.03       98.64
          X |          5        0.05       98.69
          Y |        111        1.11       99.80
          Z |         20        0.20      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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