DOE with Three 2 level factors and One 3 level factor that needs blocking
Hello, I am trying to to design a DOE with the following factors:X1 -1 +1X2 -1 +1X3 -1 +1X4 L1 L2 L3 Due to experimental logistics, X4 cannot be changed easily; it requires an entire day to change. The other factors can be changed easily during each experiment. I was thinking of just doing a full factorial DOE design with X1, X2, and X3; and then repeating that same design for ea...