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

      vin_3 |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |         32        0.32        0.32
          1 |      1,007       10.07       10.39
          2 |        569        5.69       16.08
          3 |        639        6.39       22.47
          4 |        862        8.62       31.09
          5 |         44        0.44       31.53
          6 |        238        2.38       33.91
          7 |        284        2.84       36.75
          8 |        256        2.56       39.31
          9 |        481        4.81       44.12
          A |        854        8.54       52.66
          B |        185        1.85       54.51
          C |        557        5.57       60.08
          D |        395        3.95       64.03
          E |        169        1.69       65.72
          F |         41        0.41       66.13
          G |        382        3.82       69.95
          H |         93        0.93       70.88
          J |         31        0.31       71.19
          K |        252        2.52       73.71
          L |         58        0.58       74.29
          M |        622        6.22       80.51
          N |        425        4.25       84.76
          O |          1        0.01       84.77
          P |        116        1.16       85.93
          Q |          1        0.01       85.94
          R |         18        0.18       86.12
          S |         74        0.74       86.86
          T |        770        7.70       94.56
          U |        226        2.26       96.82
          V |         57        0.57       97.39
          W |         91        0.91       98.30
          X |        130        1.30       99.60
          Y |         24        0.24       99.84
          Z |         16        0.16      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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