A significant main effect means that,collapsing across the levels of the other independent variable,the means for an independent variable are not all equal.

Question

Quizplus · Accepted Answer

A significant main effect tells us that there is a statistically significant difference between the means of at least one independent variable, while collapsing across the levels of the other independent variable. This means that the effect of one independent variable is not the same across all levels of the other independent variable. Therefore, the statement "A significant main effect means that, collapsing across the levels of the other independent variable, the means for an independent variable are not all equal" is true.

A Significant Main Effect Means That,collapsing Across the Levels of the Other