1. Write down what type of a design for each of the followings (a)-(c) based on the representation of experiment data. (4 points each) (a) Treatment Block 1 Block 2 Block 3 Block 4 Block 5 Block 6 X X X X X X X X XX X X (b) Treatment Replicate A B Combination I II III IV 1 18.2 18.9 12.9 14.4 27.2 24.0 22.4 22.5 15.9 14.5 15.1 14.2 ab 41.0 43.9 36.3 39.9 (c) Block 1 Block 2 (1) ab ac bc abc