Summary statistics for distract dataset :

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

    Variable |        Obs        Mean    Std. Dev.       Min        Max
-------------+---------------------------------------------------------
       state |     44,018    27.92053    16.25524          1         56
     st_case |     44,018    279802.8    162516.5      10001     560121
      veh_no |     44,018    1.409378    .7759858          1         26
    mdrdstrd |     44,018    23.99498    41.54839          0         99

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