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Unformatted text preview: Divide the population into groups then the answer becomes clear Still random because you are picking the sample groups randomly Cluster Dividing the sample group into natural groups like people in grades, class groups, Something that is naturally occurring, no one forcing someone to be there Hospital, school, people living in the same town Cluster of people in a natural group Sampling vs. Cluster Sampling- Something your imposing you think is about the sample Cluster – something that is natural already there Convenience Bias cause you go to a certain place Cluster vs. Convenience Cluster- even when you pick your group after that you still make sure that the sample is random within the group Convenience – just pick somewhere and don’t make sure the it is random, like where you at just do it...
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- Fall '09
- random number table, random sampling, expense –personal interviews, TECHNIQUES Telephone Surveys