surplus.def

P	Q

  
  P = entry price (Carnarvon Gorge National Park, Queensland, Australia) for recreational use
  Q = number of camping visits (thousands per year)
  
Data source: Beal(1995)



    Variable |       Obs        Mean    Std. Dev.       Min        Max
-------------+--------------------------------------------------------
           p |         8          11    6.697548          0         20
           q |         8    12.99125    1.815928     11.265         17