What Is the Relationship Between Main Effects and Interactions

question 12

Multiple Choice

What is the relationship between main effects and interactions?

• A) At least one of the factors involved in the interaction must have a main effect.
• B) None of the factors in the interaction can have a main effect.
• C) All of the factors involved in the interaction must have main effects.
• D) The existence of an interaction is independent of the main effects.

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Definitions:

Correlated

Describes the relationship between two variables where changes in one variable are associated with changes in another.

Null Hypothesis

A hypothesis that suggests there is no statistical significance in a set of given observations, implying no effect or relationship.

Linear Relationship

A relationship between two variables where the change in one variable is directly proportional to the change in another variable.

Pearson Correlation

A statistical measure that calculates the strength and direction of a linear relationship between two quantitative variables.