Summary statistics for distract dataset :

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

    Variable |        Obs        Mean    Std. Dev.       Min        Max
-------------+---------------------------------------------------------
       state |     45,129    27.87879    16.27808          1         56
     st_case |     45,129    279428.4    162744.5      10001     560075
      veh_no |     45,129    1.524386    2.441785          1         90
    mdrdstrd |     45,129    24.39431    41.62514          0         99

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