3. Elements of Design of
Experiments
1. Conjecture or hypothesis
2. Response variable
3. Factors, levels and ranges
4. Treatments of factors
5. Blockings
6. Tools and methods for experiments and
measurements
7. Effect models (independent or interaction factors)
8. Replication, randomization and local factor
3
17. Two Factor Factorial Design
17
factor A factor B Replication Random
1 1 y111 55744
1 1 y112 78380
1 1 y113 20575
: : : :
i j yij1 98982
i j yij2 45009
i j yij3 75867
: : : :
a b yab(n-2) 10761
a b yab(n-1) 30938
a b yabn 92788