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

   previous |
        dwi |
convictions |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      9,328       93.28       93.28
          1 |        190        1.90       95.18
          2 |         30        0.30       95.48
          3 |          8        0.08       95.56
          4 |          5        0.05       95.61
          6 |          1        0.01       95.62
         99 |        369        3.69       99.31
        998 |         69        0.69      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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