Frequencies for first 10,000 rows of alc_det variable in person dataset :

  method of |
    alcohol |
determinati |
      on by |
     police |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |        721        7.21        7.21
          2 |        108        1.08        8.29
          3 |        176        1.76       10.05
          4 |         76        0.76       10.81
          5 |        354        3.54       14.35
          8 |         35        0.35       14.70
          9 |      8,530       85.30      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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