Frequencies for vin_4 variable in vehnit dataset :

      vin_4 |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |          6        0.41        0.41
          1 |          7        0.47        0.88
          2 |          3        0.20        1.08
          3 |          4        0.27        1.35
          4 |          2        0.14        1.49
          5 |         16        1.08        2.57
          6 |          1        0.07        2.63
          7 |          3        0.20        2.84
          8 |          4        0.27        3.11
          9 |         97        6.55        9.66
          A |         81        5.47       15.12
          B |         87        5.87       21.00
          C |        130        8.78       29.78
          D |         93        6.28       36.06
          E |        137        9.25       45.31
          F |         91        6.14       51.45
          G |         97        6.55       58.00
          H |        110        7.43       65.43
          J |         64        4.32       69.75
          K |         34        2.30       72.05
          L |         45        3.04       75.08
          M |         22        1.49       76.57
          N |         54        3.65       80.22
          P |         32        2.16       82.38
          R |         38        2.57       84.94
          S |         51        3.44       88.39
          T |          4        0.27       88.66
          U |         11        0.74       89.40
          V |         12        0.81       90.21
          W |         43        2.90       93.11
          X |         12        0.81       93.92
          Y |         52        3.51       97.43
          Z |         38        2.57      100.00
------------+-----------------------------------
      Total |      1,481      100.00

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