Frequencies for first 10,000 rows of vin_11 variable in vehicle dataset :

        vin |
character(1 |
         1) |      Freq.     Percent        Cum.
------------+-----------------------------------
            |         37        0.37        0.37
          0 |        429        4.29        4.66
          1 |        319        3.19        7.85
          2 |        410        4.10       11.95
          3 |         63        0.63       12.58
          4 |        120        1.20       13.78
          5 |        224        2.24       16.02
          6 |        145        1.45       17.47
          7 |        182        1.82       19.29
          8 |         97        0.97       20.26
          9 |        429        4.29       24.55
          A |        729        7.29       31.84
          B |        259        2.59       34.43
          C |        685        6.85       41.28
          D |        234        2.34       43.62
          E |        317        3.17       46.79
          F |        350        3.50       50.29
          G |        261        2.61       52.90
          H |        397        3.97       56.87
          J |        260        2.60       59.47
          K |        313        3.13       62.60
          L |        439        4.39       66.99
          M |        316        3.16       70.15
          N |        317        3.17       73.32
          P |        178        1.78       75.10
          R |        287        2.87       77.97
          S |        363        3.63       81.60
          T |        155        1.55       83.15
          U |        515        5.15       88.30
          V |         18        0.18       88.48
          W |        193        1.93       90.41
          X |        128        1.28       91.69
          Y |        315        3.15       94.84
          Z |        516        5.16      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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