Frequencies for first 10,000 rows of vin_3 variable in vehicle dataset :

        vin |
character(3 |
          ) |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |         34        0.34        0.34
          1 |      1,145       11.45       11.79
          2 |        409        4.09       15.88
          3 |        484        4.84       20.72
          4 |        873        8.73       29.45
          5 |         20        0.20       29.65
          6 |        224        2.24       31.89
          7 |        232        2.32       34.21
          8 |        268        2.68       36.89
          9 |        403        4.03       40.92
          A |        828        8.28       49.20
          B |        185        1.85       51.05
          C |        444        4.44       55.49
          D |        659        6.59       62.08
          E |        189        1.89       63.97
          F |        109        1.09       65.06
          G |        393        3.93       68.99
          H |        161        1.61       70.60
          I |          1        0.01       70.61
          J |         36        0.36       70.97
          K |        274        2.74       73.71
          L |         71        0.71       74.42
          M |        526        5.26       79.68
          N |        438        4.38       84.06
          P |        152        1.52       85.58
          R |         20        0.20       85.78
          S |         91        0.91       86.69
          T |        685        6.85       93.54
          U |        213        2.13       95.67
          V |         77        0.77       96.44
          W |        119        1.19       97.63
          X |        158        1.58       99.21
          Y |         43        0.43       99.64
          Z |         36        0.36      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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