When attempting to establish causation from an observational study, which of the following is NOT a necessary consideration?

A. The alleged cause precedes the effect
B. The alleged cause is plausible
C. The explanatory and response variables are perfectly correlated (r = 1 or r = -1)



Answer :

Final answer:

Correlation in observational studies does not necessarily imply causation. Key considerations for establishing causation include the precedence of the alleged cause, plausibility, and nonspurious relationships.


Explanation:

Correlation in observational studies indicates an association between variables, but causation is more complex. To establish causation, the alleged cause must precede the effect in time, be plausible, and the relationship should be nonspurious. Correlation does not necessarily imply causation; alternative explanations must be considered.


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