Summary statistics for miper dataset :

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

    Variable |        Obs        Mean    Std. Dev.       Min        Max
-------------+---------------------------------------------------------
        year |        837        2001           0       2001       2001
     st_case |        837    430233.3     135.632     430001     430470
      veh_no |        837    1.004779    .7733455          0          6
      per_no |        837    1.015532    .1577279          1          4
          p1 |        837    5.936679     9.87552          0         46
-------------+---------------------------------------------------------
          p2 |        837     5.90681    9.509044          0         44
          p3 |        837    5.686977    9.368454          0         51
          p4 |        837    5.867384    9.694513          0         49
          p5 |        837    5.740741    9.410542          0         40
          p6 |        837    5.919952     9.77557          0         45
-------------+---------------------------------------------------------
          p7 |        837    5.665472    9.571834          0         40
          p8 |        837    5.857826    9.555935          0         45
          p9 |        837    6.010753    9.693688          0         50
         p10 |        837     5.55675    9.211793          0         41

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