Frequencies for vin_7 variable in vehnit dataset :

      vin_7 |      Freq.     Percent        Cum.
------------+-----------------------------------
            |          1        0.08        0.08
          0 |         45        3.54        3.62
          1 |        153       12.03       15.64
          2 |        191       15.02       30.66
          3 |        118        9.28       39.94
          4 |        153       12.03       51.97
          5 |         91        7.15       59.12
          6 |        132       10.38       69.50
          7 |         36        2.83       72.33
          8 |         99        7.78       80.11
          9 |        145       11.40       91.51
          A |         19        1.49       93.00
          B |         10        0.79       93.79
          C |         23        1.81       95.60
          D |          6        0.47       96.07
          E |          9        0.71       96.78
          G |          6        0.47       97.25
          H |          2        0.16       97.41
          J |          2        0.16       97.56
          M |          2        0.16       97.72
          N |          1        0.08       97.80
          P |          2        0.16       97.96
          R |          4        0.31       98.27
          S |          1        0.08       98.35
          T |          6        0.47       98.82
          V |          1        0.08       98.90
          W |          1        0.08       98.98
          Y |          6        0.47       99.45
          Z |          7        0.55      100.00
------------+-----------------------------------
      Total |      1,272      100.00

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