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An experiment was designed to test causation but participants chose their own groups. What is the main risk?

Answer and explanation

Correct answer: Pre-existing selection differences may affect the result

Participants choosing their own groups may differ before treatment. Understand the value of random assignment.

Related tags

Selection BiasRandom AssignmentCausal InferenceNature And Meaning Of ScienceExploration: Entering The World Of Secondary ScienceExploration Entering The World Of Secondary ScienceScienceClass 9 Mcq

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