Summary statistics for miper dataset :

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

    Variable |        Obs        Mean    Std. Dev.       Min        Max
-------------+---------------------------------------------------------
     st_case |     67,042    270461.7      160355      10001     560107
      veh_no |     67,042    1.241759    .9467527          0         38
      per_no |     67,042    1.018391    .2094956          1         14
        year |     67,042        1990           0       1990       1990
          p1 |     67,042      5.6173    9.298989          0         81
-------------+---------------------------------------------------------
          p2 |     67,042    5.596074    9.296304          0         81
          p3 |     67,042    5.590913    9.297989          0         85
          p4 |     67,042     5.57197    9.261904          0         81
          p5 |     67,042    5.591584    9.303698          0         81
          p6 |     67,042    5.538916    9.273392          0         81
-------------+---------------------------------------------------------
          p7 |     67,042    5.570687    9.288947          0         81
          p8 |     67,042    5.598133    9.286022          0         81
          p9 |     67,042    5.537186    9.240145          0         81
         p10 |     67,042    5.572358    9.255243          0         81

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