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

      vin_4 |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |        359        3.59        3.59
          1 |        896        8.96       12.55
          2 |        742        7.42       19.97
          3 |        488        4.88       24.85
          4 |        355        3.55       28.40
          5 |        336        3.36       31.76
          6 |        213        2.13       33.89
          7 |        764        7.64       41.53
          8 |        229        2.29       43.82
          9 |        935        9.35       53.17
          A |        858        8.58       61.75
          B |        814        8.14       69.89
          C |        365        3.65       73.54
          D |        177        1.77       75.31
          E |        206        2.06       77.37
          F |        197        1.97       79.34
          G |        265        2.65       81.99
          H |        225        2.25       84.24
          J |        105        1.05       85.29
          K |         87        0.87       86.16
          L |         59        0.59       86.75
          M |        109        1.09       87.84
          N |        164        1.64       89.48
          P |        152        1.52       91.00
          Q |          3        0.03       91.03
          R |        342        3.42       94.45
          S |        155        1.55       96.00
          T |         58        0.58       96.58
          U |         46        0.46       97.04
          V |         25        0.25       97.29
          W |         40        0.40       97.69
          X |         12        0.12       97.81
          Y |        137        1.37       99.18
          Z |         82        0.82      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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