Summary statistics for miper dataset :

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

    Variable |        Obs        Mean    Std. Dev.       Min        Max
-------------+---------------------------------------------------------
     st_case |     49,368    277152.8    162565.6      10001     560121
      veh_no |     49,368    1.247164    .8572666          0         26
      per_no |     49,368    1.012154    .1361203          1          6
          p1 |     49,368    4.391509     8.57673          0         66
          p2 |     49,368    4.384865    8.578549          0         66
-------------+---------------------------------------------------------
          p3 |     49,368    4.406417    8.572351          0         75
          p4 |     49,368    4.413162     8.61569          0         75
          p5 |     49,368    4.423554    8.588361          0         66
          p6 |     49,368    4.454829      8.6141          0         66
          p7 |     49,368    4.389118     8.57736          0         66
-------------+---------------------------------------------------------
          p8 |     49,368     4.45171    8.615811          0         83
          p9 |     49,368    4.409071    8.592962          0         66
         p10 |     49,368    4.412778    8.582211          0         66

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