Frequencies for vin_10 variable in vehicle dataset :

     vin_10 |      Freq.     Percent        Cum.
------------+-----------------------------------
            |          3        0.48        0.48
          0 |         23        3.67        4.15
          1 |         23        3.67        7.83
          2 |         40        6.39       14.22
          3 |         42        6.71       20.93
          4 |         24        3.83       24.76
          5 |          6        0.96       25.72
          6 |          1        0.16       25.88
          7 |          1        0.16       26.04
          8 |          1        0.16       26.20
          9 |         69       11.02       37.22
          B |          7        1.12       38.34
          C |          4        0.64       38.98
          D |          5        0.80       39.78
          E |          8        1.28       41.05
          F |         17        2.72       43.77
          G |         15        2.40       46.17
          H |         18        2.88       49.04
          J |         16        2.56       51.60
          K |         23        3.67       55.27
          L |         20        3.19       58.47
          M |         15        2.40       60.86
          N |         16        2.56       63.42
          P |         28        4.47       67.89
          R |         24        3.83       71.73
          S |         28        4.47       76.20
          T |         20        3.19       79.39
          V |         35        5.59       84.98
          W |         27        4.31       89.30
          X |         36        5.75       95.05
          Y |         31        4.95      100.00
------------+-----------------------------------
      Total |        626      100.00

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