Summary statistics for violatn dataset :

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

    Variable |        Obs        Mean    Std. Dev.       Min        Max
-------------+---------------------------------------------------------
       state |        635          43           0         43         43
     st_case |        635    430139.8    83.45505     430001     430288
      veh_no |        635    1.190551    .4830622          1          4
    mviolatn |        635     16.4315    19.52026          0         95

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