# Question: Refer to Figure 16 1 If a b and a b are

Refer to Figure 16.1. If a, b, and a*b are all statistically significant (and large enough to be of practical or clinical importance), and c’ is not statistically significant and/or not large enough to be judged practically or clinically important: would you say that the effects of X1 on Y are partially or completely mediated by X2?

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