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.