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

  Method of |
    alcohol |
determinati |
      on by |
     police |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |        239        2.39        2.39
          2 |         95        0.95        3.34
          3 |        183        1.83        5.17
          4 |         55        0.55        5.72
          5 |        900        9.00       14.72
          8 |        165        1.65       16.37
          9 |      8,363       83.63      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 18 Apr 2016