(Scenario III) According to Scenario III, there was a main effect for drug consumption, with people receiving the marijuana cigarette with THC being more likely to exhibit risky behavior than those who received the placebo. To arrive at this conclusion, the researchers would have had to examine:
A) interaction means.
B) cell means.
C) marginal means.
D) factorial means.

Question

Quizplus · Accepted Answer

The researchers would have examined marginal means to determine the main effect of drug consumption, as marginal means represent the average effect of one independent variable across the levels of another variable.

(Scenario III) According to Scenario III, There Was a Main