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

        vin |
character(4 |
          ) |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |         62        0.62        0.62
          1 |        376        3.76        4.38
          2 |         11        0.11        4.49
          3 |         31        0.31        4.80
          4 |         41        0.41        5.21
          5 |         66        0.66        5.87
          6 |         11        0.11        5.98
          7 |         20        0.20        6.18
          8 |          8        0.08        6.26
          9 |        334        3.34        9.60
          A |        607        6.07       15.67
          B |        709        7.09       22.76
          C |        816        8.16       30.92
          D |        621        6.21       37.13
          E |        961        9.61       46.74
          F |        695        6.95       53.69
          G |        621        6.21       59.90
          H |        618        6.18       66.08
          J |        333        3.33       69.41
          K |        245        2.45       71.86
          L |        158        1.58       73.44
          M |        108        1.08       74.52
          N |        262        2.62       77.14
          P |        205        2.05       79.19
          R |        497        4.97       84.16
          S |        326        3.26       87.42
          T |         83        0.83       88.25
          U |         60        0.60       88.85
          V |        193        1.93       90.78
          W |        288        2.88       93.66
          X |         34        0.34       94.00
          Y |        205        2.05       96.05
          Z |        395        3.95      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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