Column Merging in an Lg Eliminate the column which is confounded with Interactions Create a new four-level column Control factors Exp nO. ABCDEFG 234 2 12 2222 2122 22121 6 222 212 22 82212112 Robust System Design mit 人 16881 Session #111 2 3 4 5 6 7 8 Column Merging in an L8 • Eliminate the column which is confounded with interactions • Create a new four-level column Control Factors Exp no. A B C D E F G η 1 1 1 1 1 2 1 2 2 1 2 1 2 1 2 2 1 1 2 2 1 2 2 2 1 1 1 1 1 2 2 2 2 1 1 2 2 2 2 1 2 1 2 1 2 2 1 2 1 1 2 2 1 2 1 1 Robust System Design 16.881 Session #11 MIT