For each of the following (a) indicate how many factors are included, and (b) tell how many levels there are for each factor: a. 2   2 b. 2   3 c. 2   3   2 d. 4   3 e. 4   3   2   3 As the teaching...

For each of the following (a) indicate how many factors are included, and (b) tell how many levels there are for each factor:

a. 2
  2

b. 2
  3

c. 2
  3
  2

d. 4
  3

e. 4
  3
  2
  3

As the teaching assistant for your course, you are asked to explain the concept of interaction. Organize your presentation, starting by making the distinction between main effects and interactions. Be sure to clarify the distinction between additive and interactive effects.