Statistical Design of Experiments
Statistical Design of Experiments
Statistical Design of Experiments
Statistical Design of Experiments
Two -Way ANOVA
Two -Way ANOVA
Two Factors
Two Factors
Factor A at ‘a’ levels
Factor A at ‘a’ levels
Factor B at ‘b’ levels
Factor B at ‘b’ levels
Sum of Squares
Sum of Squares
SS
SS
Total
Total
= SS
= SS
(A)
(A)
+ SS
+ SS
(B)
(B)
+ SS
+ SS
(AB)
(AB)
+ SS
+ SS
E
E
Controlled
Controlled
Variation
Variation
Uncontrolled
Uncontrolled
Variation
Variation
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