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What is the difference between an observational study and a controlled experiment? Give an example of each.

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GinnyAnsweridn

Final answer:

Observational studies observe without manipulating variables, while controlled experiments apply treatments and compare outcomes.


Explanation:

Observational studies involve observing subjects without any manipulation of variables, while controlled experiments involve applying treatments to subjects and comparing outcomes between experimental and control groups. An example of an observational study is a political poll collecting data on candidate preferences, while an example of a controlled experiment is Jonas Salk's polio vaccine trial where children were divided into experimental and control groups.


Learn more about Observational studies vs. controlled experiments here:

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