Frequencies for first 10,000 rows of vin_4 variable in vehicle dataset :

      vin_4 |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |        686        6.86        6.86
          1 |      1,332       13.32       20.18
          2 |      1,122       11.22       31.40
          3 |        826        8.26       39.66
          4 |        609        6.09       45.75
          5 |        600        6.00       51.75
          6 |        377        3.77       55.52
          7 |      1,213       12.13       67.65
          8 |        355        3.55       71.20
          9 |      1,275       12.75       83.95
          A |        263        2.63       86.58
          B |        257        2.57       89.15
          C |        137        1.37       90.52
          D |         42        0.42       90.94
          E |         37        0.37       91.31
          F |         41        0.41       91.72
          G |        126        1.26       92.98
          H |        124        1.24       94.22
          J |         72        0.72       94.94
          K |         26        0.26       95.20
          L |         91        0.91       96.11
          M |         25        0.25       96.36
          N |          8        0.08       96.44
          P |         14        0.14       96.58
          Q |          6        0.06       96.64
          R |         34        0.34       96.98
          S |         74        0.74       97.72
          T |         37        0.37       98.09
          U |         10        0.10       98.19
          V |         12        0.12       98.31
          W |         12        0.12       98.43
          X |          2        0.02       98.45
          Y |        150        1.50       99.95
          Z |          5        0.05      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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