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14
Factorial Design of Experiments to
Optimize a Chemical Process
This case study is about a process that produces a chemical whose yield (weight
in grams) needs to be maximized while minimizing the cost ($) of production.
Sections 14.1 and 14.2 describe the dene phase and the measure phase,
respectively. Section 14.3 illustrates the analyze phase with detailed instruc-
tions for using Minitab
®
. Finally, Section 14.4 gives a brief description of the
improve and control phases.
14.1 Define Phase
The objective is to maximize the yield and minimize the cost. The members
of the Six Sigma project team brainstorm to identify the following factors ...