3. a) Describe the Taguchi approach in experimental design? Explain the difference between control factor and noise factor and their relationship in Taguchi design. What is Taguchi Loss Function? 3 STO$6254 b) Discuss the advantages and limitations of Taguchi design versus the classical design. c) Consider Taguchi La and Le design. Define these symbols and for each of these designs, construct the associated orthogonal arrays table and the linear graphs. d) Suppose we want to study five factors, A, B. C. D. and E, and have two interactions that cannot be assumed to be zero, which are AB and AC. Construct an appropriate linear graph and orthogonal arrays table. List down the treatment combinations for each row of the orthogonal table, defining relations and aliases for this experiment