PPRuNe Forums - View Single Post - REX to transition to ATRs, start domestic jet ops
Old 2nd Sep 2020, 22:32
  #243 (permalink)  
MickG0105
 
Join Date: May 2016
Location: Sunshine Coast
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Originally Posted by blubak
1500 polled over 3 days!!,Im not even going to bother working out what % of the population 1500 is but if someone wants to go on those stats,well so be it.
Don't fall for the old trap of thinking that 1500 can't possibly be a reasonably representative sample for a population of 25.5 million. Statistically, 1500 is more than sufficient to return results with a 3.5 per cent margin of error at a 99 per cent confidence level. If you're prepared to take your confidence level down to 95 per cent, with the same margin of error, you can get by with roughly half that number of participants.
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