What is the difference between main effect and interaction effect?
a. Main effect is the effect of one factor, ignoring the other while interaction effect is the effect of one factor varying depending on the level of the other factor
b. Interaction effect is the effect of one factor varying depending on the level of the other factor while main effect is the effect of one factor, ignoring the other
c. There is no difference
d. Both A & B are correct
Answer: a. Main effect is the effect of one factor, ignoring the other while interaction effect is the effect of one factor varying depending on the level of the other factor
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