Summary statistics for violatn dataset :

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

    Variable |        Obs        Mean    Std. Dev.       Min        Max
-------------+---------------------------------------------------------
       state |        752          43           0         43         43
     st_case |        752    430170.6    96.17562     430001     430333
      veh_no |        752     1.19016    .4755083          1          4
    mviolatn |        752    16.91223    19.82427          0         95

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