Multiple Choice
How is an observational study different from an experiment?
A) An observational study is always done in a lab, whereas an experiment is always done outside of a laboratory.
B) An experiment is always done in a lab, whereas an observational study is always done outside of a laboratory.
C) It isn't.They are two names for the same thing.
D) In an observational study, variables are not controlled but rather observed as they naturally occur.
E) In an experiment, variables are not controlled but rather observed as they naturally occur.
Correct Answer:
Verified
Correct Answer:
Verified
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