Montgomery (2009) described a 241 fractional factorial
Chapter 14, Problem 14-44(choose chapter or problem)
Montgomery (2009) described a 241 fractional factorial design used to study four factors in a chemical process. The factors are A temperature, B pressure, C concentration, and D stirring rate, and the response is filtration rate. The design and the data are as follows: A B(a) Write down the alias relationships. (b) Estimate the factor effects. Which factor effects appear large? (c) Project this design into a full factorial in the three apparently important factors and provide a practical interpretation of the results.
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