
241Factorial Design of Experiments to Optimize a Chemical Process
interaction between factors B and C, and the interaction between factors A
and C have a signicant effect on Cost.
The session window le also produces the analysis of variance outputs
shown in Figures14.16 and 14.17 for both Yield and Cost, respectively. As in
the Pareto chart and normal plot, the terms that have a signicant effect on a
response have P-values lower than 0.05. For example, for Yield, factors A and
B and the interaction between factors A (Time) and B (Temp) have P-values
lower than 0.05.
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Standardized Effect
Percent
BC
AC
C
B
A