One reason we may not make causal conclusions based only on correlational evidence is that a correlation between two variables
A)may be zero.
B)may be negative.
C)does not tell us about the possible direction of causality.
D)never involves causally related variables.

Question

Quizplus · Accepted Answer

Correlation does not determine the direction of causality. There may be a third variable that causes both variables to have a correlation or the causal direction may be the opposite of what we assume. Therefore, we should not draw any causal conclusions solely based on correlational evidence. Options A, B and D are not adequate for this question.

One Reason We May Not Make Causal Conclusions Based Only