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Eduardwww [97]
3 years ago
9

How are observational studies of populations different from experimental studies? What can be learned from observational populat

ion studies?
SAT
1 answer:
WINSTONCH [101]3 years ago
5 0

Answer:

In an observational study, we measure or survey members of a sample without trying to affect them. In a controlled experiment, we assign people or things to groups and apply some treatment to one of the groups, while the other group does not receive the treatment.

Explanation:

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