How Many Interactions Does A 2x2x2 Design Have?
How Many Interactions Does A 2x2x2 Design Have? The number of interactions in the design also depend on the number of IVs. For a 2×2 design there is only 1 interaction. The interaction between IV1 and IV2. This occurs when the effect of say IV2 (whether there is a difference between the levels of IV2)