Frequencies for first 10,000 rows of vin_7 variable in vehicle dataset :

      vin_7 |      Freq.     Percent        Cum.
------------+-----------------------------------
            |          9        0.09        0.09
          0 |        404        4.04        4.13
          1 |      1,212       12.12       16.25
          2 |      1,519       15.19       31.44
          3 |        824        8.24       39.68
          4 |      1,421       14.21       53.89
          5 |        775        7.75       61.64
          6 |        939        9.39       71.03
          7 |        372        3.72       74.75
          8 |        550        5.50       80.25
          9 |      1,089       10.89       91.14
          A |         69        0.69       91.83
          B |         39        0.39       92.22
          C |         55        0.55       92.77
          D |         40        0.40       93.17
          E |         86        0.86       94.03
          F |         25        0.25       94.28
          G |         25        0.25       94.53
          H |         39        0.39       94.92
          J |         34        0.34       95.26
          K |          6        0.06       95.32
          L |         78        0.78       96.10
          M |         33        0.33       96.43
          N |          6        0.06       96.49
          P |         31        0.31       96.80
          Q |          3        0.03       96.83
          R |         41        0.41       97.24
          S |         22        0.22       97.46
          T |          8        0.08       97.54
          U |         13        0.13       97.67
          V |         21        0.21       97.88
          W |         20        0.20       98.08
          X |         20        0.20       98.28
          Y |        119        1.19       99.47
          Z |         53        0.53      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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