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 |        143        1.43        8.64
          3 |        170        1.70       10.34
          4 |         39        0.39       10.73
          5 |        316        3.16       13.89
          8 |         58        0.58       14.47
          9 |      8,553       85.53      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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