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What are some examples of secondary data?

What can sound conclusions only be drawn from?

Why is the sociologist's subject matter unpredicatble?

What do sociologists uses in order to evaluate the quality of evidence from their own or other research?

What methods are thought to be the most reliable and why?

What does reliability mean?

What research method tends to produce data that is higher in reliability than other methods.

What does validity refer to?

Where does validity usually derive from?

How can the researcher affect valdity?