Summary statistics for miper dataset :

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

    Variable |        Obs        Mean    Std. Dev.       Min        Max
-------------+---------------------------------------------------------
     st_case |     69,952    271489.9    159477.6      10001     560114
      veh_no |     69,952    1.236434    .8548052          0         22
      per_no |     69,952    1.017898    .2289779          1         15
        year |     69,952        1987           0       1987       1987
          p1 |     69,952     5.56616     9.18947          0         94
-------------+---------------------------------------------------------
          p2 |     69,952    5.600512    9.236912          0         94
          p3 |     69,952    5.610633    9.252209          0         94
          p4 |     69,952    5.596366    9.265021          0         94
          p5 |     69,952     5.55651    9.168274          0         94
          p6 |     69,952    5.577453    9.223257          0         94
-------------+---------------------------------------------------------
          p7 |     69,952     5.50689    9.158485          0         94
          p8 |     69,952    5.577339    9.192928          0         94
          p9 |     69,952    5.612177     9.20979          0         94
         p10 |     69,952    5.525017    9.178688          0         94

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