pilots.def

kills months

  Obs:   11

  1. KILLS = number of enemy fighters shot down by an airman
  2. MONTHS = months of service 

reference:  Franklin G. Mixon "Estimating Learning Curves in Economics: Evidence From Aerial Combat Over the Third Reich",
            KYKLOS, 1993, Volume 46, Number 3, pp. 411-419.
            
Data source: Franklin G. Mixon 



    Variable |       Obs        Mean    Std. Dev.       Min        Max
-------------+--------------------------------------------------------
       kills |        11    169.2727    92.41871         71        352
      months |        11    30.09091    8.904544         18         43