Summary statistics for miper dataset :

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

    Variable |        Obs        Mean    Std. Dev.       Min        Max
-------------+---------------------------------------------------------
        year |        866        2002           0       2002       2002
     st_case |        866    430246.2    144.5008     430001     430494
      veh_no |        866      .97806    .6989531          0          3
      per_no |        866    1.016166    .1586565          1          4
          p1 |        866    4.536952    8.769055          0         40
-------------+---------------------------------------------------------
          p2 |        866    4.548499    8.718359          0         40
          p3 |        866    4.650115     8.98663          0         52
          p4 |        866    4.657044    8.963326          0         49
          p5 |        866    4.829099    9.084491          0         40
          p6 |        866     4.65127    8.762023          0         40
-------------+---------------------------------------------------------
          p7 |        866    4.627021    8.863547          0         40
          p8 |        866    4.616628     8.61191          0         40
          p9 |        866    4.839492    8.947806          0         43
         p10 |        866    4.757506    8.859799          0         40

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