Summary statistics for miper dataset :

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

    Variable |        Obs        Mean    Std. Dev.       Min        Max
-------------+---------------------------------------------------------
      veh_no |     64,034    1.291158    .8386414          0         22
      per_no |     64,034    1.012962    .1756338          1         10
     st_case |     64,034    267534.7    162528.4      10001     560169
          p1 |     64,034    4.380454    8.496914          0         92
          p2 |     64,034    4.404769    8.486753          0         92
-------------+---------------------------------------------------------
          p3 |     64,034    4.454446    8.536236          0         92
          p4 |     64,034     4.42821    8.512474          0         92
          p5 |     64,034    4.461052     8.53118          0         92
          p6 |     64,034    4.402286    8.504273          0         92
          p7 |     64,034    4.434769    8.529357          0         92
-------------+---------------------------------------------------------
          p8 |     64,034    4.369569    8.480302          0         92
          p9 |     64,034    4.376097    8.487999          0         92
         p10 |     64,034     4.44759    8.548904          0         92

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