Summary statistics for miper dataset :

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

    Variable |        Obs        Mean    Std. Dev.       Min        Max
-------------+---------------------------------------------------------
     st_case |     68,559    270691.2    160003.5      10001     560114
      veh_no |     68,559    1.246736    .9783696          0         43
      per_no |     68,559    1.015403    .1699317          1          8
        year |     68,559        1989           0       1989       1989
          p1 |     68,559    5.358713    9.123042          0         86
-------------+---------------------------------------------------------
          p2 |     68,559    5.331481    9.132454          0         86
          p3 |     68,559    5.331758    9.118977          0         86
          p4 |     68,559    5.350166    9.128572          0         86
          p5 |     68,559    5.347205    9.124793          0         86
          p6 |     68,559    5.316384     9.12492          0         86
-------------+---------------------------------------------------------
          p7 |     68,559    5.360157    9.134468          0         86
          p8 |     68,559     5.36077    9.128078          0         86
          p9 |     68,559     5.40037    9.159515          0         86
         p10 |     68,559    5.278548    9.082831          0         86

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