Summary statistics for miper dataset :

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

    Variable |        Obs        Mean    Std. Dev.       Min        Max
-------------+---------------------------------------------------------
     st_case |     66,245    275148.2    159785.4      10002     560136
      veh_no |     66,245    1.234388    1.009313          0         36
      per_no |     66,245    1.014658    .1716928          1         20
        year |     66,245        1985           0       1985       1985
          p1 |     66,245     5.67507     9.19539          0         69
-------------+---------------------------------------------------------
          p2 |     66,245    5.618416     9.11189          0         68
          p3 |     66,245    5.673334    9.151306          0         81
          p4 |     66,245    5.658404    9.133436          0         68
          p5 |     66,245    5.591652    9.103912          0         71
          p6 |     66,245    5.642131     9.13743          0         87
-------------+---------------------------------------------------------
          p7 |     66,245    5.651143    9.147788          0         68
          p8 |     66,245    5.610869    9.134049          0         68
          p9 |     66,245    5.612741    9.107113          0         68
         p10 |     66,245    5.668352    9.147552          0         68

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