Summary statistics for distract dataset :

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

    Variable |        Obs        Mean    Std. Dev.       Min        Max
-------------+---------------------------------------------------------
       state |     45,995    27.99848    16.23358          1         56
     st_case |     45,995    280623.7    162314.3      10001     560113
      veh_no |     45,995    1.428938    .8786739          1         31
    mdrdstrd |     45,995    23.40374    41.07143          0         99

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