# A-Level Sampling

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#1
Seems like a silly question but why can’t stratified sampling be used? It is because it’s random? Would we need to use quota sampling?
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#2
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1 month ago
#3
hmm im not sure tbh. do you have the mark scheme?

(Original post by satsun)
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#4
(Original post by tej3141)
hmm im not sure tbh. do you have the mark scheme?
No this is part of Edexcel’s assessment materials, so any advice would be much appreciated!
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1 month ago
#5
Don’t know if this is right but you wouldn’t use stratified random because the population is too large therefore it would be an impractical method. Instead maybe use systematic sampling at regular intervals. Hope that helps! 🙂
Last edited by Eclipse07; 1 month ago
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1 month ago
#6
Also, if you need any more help let me know...
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1 month ago
#7
(Original post by Eclipse07)
Don’t know if this is right but you wouldn’t use stratified random because the population is too large therefore it would be an impractical method. Instead maybe use systematic sampling at regular intervals. Hope that helps! 🙂
I ovelooked the work random. this may be the correct answer though im not entirely sure
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1 month ago
#8
(Original post by Eclipse07)
Don’t know if this is right but you wouldn’t use stratified random because the population is too large therefore it would be an impractical method. Instead maybe use systematic sampling at regular intervals. Hope that helps! 🙂
Not my area, but I think the main issue isn't the size of the population, but the practical impossibility of separating the population into strata to sample from.
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1 month ago
#9
Sorry I can’t help with the question... Are these resources available on their website? :-)
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1 month ago
#10
(Original post by DFranklin)
Not my area, but I think the main issue isn't the size of the population, but the practical impossibility of separating the population into strata to sample from.
how is it practically impossible? because its hard to catch the exact amount of each fish?
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1 month ago
#11
(Original post by tej3141)
how is it practically impossible? because its hard to catch the exact amount of each fish?
Wikipedia: Stratified sampling is not useful when the population cannot be exhaustively partitioned into disjoint subgroups

Good luck exhaustively partitioning the fish in a lake...
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