Frequencies for first 10,000 rows of vin_6 variable in vehicle dataset :

      vin_6 |      Freq.     Percent        Cum.
------------+-----------------------------------
            |         15        0.15        0.15
          0 |        507        5.07        5.22
          1 |      2,093       20.93       26.15
          2 |      1,304       13.04       39.19
          3 |        911        9.11       48.30
          4 |        653        6.53       54.83
          5 |      1,041       10.41       65.24
          6 |        639        6.39       71.63
          7 |        479        4.79       76.42
          8 |        502        5.02       81.44
          9 |        792        7.92       89.36
          A |        212        2.12       91.48
          B |        152        1.52       93.00
          C |        104        1.04       94.04
          D |         55        0.55       94.59
          E |         59        0.59       95.18
          F |         33        0.33       95.51
          G |         37        0.37       95.88
          H |         57        0.57       96.45
          J |         34        0.34       96.79
          K |         20        0.20       96.99
          L |         39        0.39       97.38
          M |         27        0.27       97.65
          N |          7        0.07       97.72
          P |         24        0.24       97.96
          Q |          3        0.03       97.99
          R |         38        0.38       98.37
          S |         38        0.38       98.75
          T |         20        0.20       98.95
          U |         19        0.19       99.14
          V |         13        0.13       99.27
          W |         11        0.11       99.38
          X |         16        0.16       99.54
          Y |          7        0.07       99.61
          Z |         39        0.39      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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