Frequencies for first 10,000 rows of vin_10 variable in vehicle dataset :

        vin |
character(1 |
         0) |      Freq.     Percent        Cum.
------------+-----------------------------------
            |         38        0.38        0.38
          0 |         23        0.23        0.61
          1 |        551        5.51        6.12
          2 |        522        5.22       11.34
          3 |        647        6.47       17.81
          4 |        598        5.98       23.79
          5 |        634        6.34       30.13
          6 |        671        6.71       36.84
          7 |        646        6.46       43.30
          8 |        477        4.77       48.07
          9 |        672        6.72       54.79
          A |        319        3.19       57.98
          B |        349        3.49       61.47
          C |        471        4.71       66.18
          D |        371        3.71       69.89
          E |         52        0.52       70.41
          F |         24        0.24       70.65
          G |         37        0.37       71.02
          H |         28        0.28       71.30
          J |         58        0.58       71.88
          K |         75        0.75       72.63
          L |         68        0.68       73.31
          M |         93        0.93       74.24
          N |         99        0.99       75.23
          P |        137        1.37       76.60
          R |        187        1.87       78.47
          S |        228        2.28       80.75
          T |        264        2.64       83.39
          V |        332        3.32       86.71
          W |        362        3.62       90.33
          X |        411        4.11       94.44
          Y |        556        5.56      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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