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

        vin |
character(4 |
          ) |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |         51        0.51        0.51
          1 |        379        3.79        4.30
          2 |         24        0.24        4.54
          3 |         19        0.19        4.73
          4 |         47        0.47        5.20
          5 |         57        0.57        5.77
          6 |         19        0.19        5.96
          7 |         34        0.34        6.30
          8 |          9        0.09        6.39
          9 |        351        3.51        9.90
          A |        583        5.83       15.73
          B |        789        7.89       23.62
          C |        837        8.37       31.99
          D |        608        6.08       38.07
          E |        949        9.49       47.56
          F |        628        6.28       53.84
          G |        557        5.57       59.41
          H |        597        5.97       65.38
          J |        348        3.48       68.86
          K |        273        2.73       71.59
          L |        154        1.54       73.13
          M |        111        1.11       74.24
          N |        255        2.55       76.79
          P |        205        2.05       78.84
          R |        513        5.13       83.97
          S |        335        3.35       87.32
          T |        105        1.05       88.37
          U |         77        0.77       89.14
          V |        171        1.71       90.85
          W |        275        2.75       93.60
          X |         27        0.27       93.87
          Y |        233        2.33       96.20
          Z |        380        3.80      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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