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

      vin_4 |      Freq.     Percent        Cum.
------------+-----------------------------------
            |          1        0.01        0.01
          0 |         84        0.84        0.85
          1 |        289        2.89        3.74
          2 |        195        1.95        5.69
          3 |        107        1.07        6.76
          4 |        106        1.06        7.82
          5 |        110        1.10        8.92
          6 |         56        0.56        9.48
          7 |        183        1.83       11.31
          8 |         62        0.62       11.93
          9 |        510        5.10       17.03
          A |        858        8.58       25.61
          B |        942        9.42       35.03
          C |        989        9.89       44.92
          D |        555        5.55       50.47
          E |        728        7.28       57.75
          F |        432        4.32       62.07
          G |        440        4.40       66.47
          H |        476        4.76       71.23
          J |        221        2.21       73.44
          K |        139        1.39       74.83
          L |        345        3.45       78.28
          M |        138        1.38       79.66
          N |        207        2.07       81.73
          O |          1        0.01       81.74
          P |        328        3.28       85.02
          R |        359        3.59       88.61
          S |        359        3.59       92.20
          T |         41        0.41       92.61
          U |         52        0.52       93.13
          V |        157        1.57       94.70
          W |        186        1.86       96.56
          X |         87        0.87       97.43
          Y |        179        1.79       99.22
          Z |         78        0.78      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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