Summary statistics for distract dataset :

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

    Variable |        Obs        Mean    Std. Dev.       Min        Max
-------------+---------------------------------------------------------
       state |     48,962    27.62465    16.27761          1         56
     st_case |     48,962    276936.6    162714.4      10001     560130
      veh_no |     48,962    1.503676    1.527936          1         58
    mdrdstrd |     48,962    27.30062    43.28376          0         99

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