Summary statistics for nmprior dataset :

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

    Variable |        Obs        Mean    Std. Dev.       Min        Max
-------------+---------------------------------------------------------
       state |        143          43           0         43         43
     st_case |        143    430176.3    94.41299     430001     430333
      veh_no |        143           0           0          0          0
      per_no |        143    1.174825    .6534274          1          5
     mpr_act |        143    4.804196    2.791483          1         12

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