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Hi Mr.John Moffat.
I have a question about cluster sampling. In revision kit, there is a question which is asked that ” In cluster sampling there is very potential for bias.” and the answer is false.
is this a correct answer? I want ask more — All these probability method should be free from bias?
Thanks for attention
It is a correct answer – the clusters are selected at random and so there should not be bias. And yes – we always want to be free from bias whichever sampling method is used.