Considering the combined effects that may be considered by using the calculation example, the difference in the horizontal 6.1 or consider using numerical value difference in vertical (Vertical) can, too. To see that in the case 2 factors factors. The impact that respond to Y) will be changed for one factor depends on the conditions of the experiment.The value Y response when change the value of B factors from the level 1 to 2 case (b) will be changed as 5 or 0, depending on the subject, at the level 1 or level of A 2 factors."Interactions Plot" (graph combined effects) if the curve parallel (parallel) shows that the difference between fixed line มีค่าเท่ากันหรือ means. In case of no interaction effects (No interactions) between factors.