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5.
Process Improvement
5.2. Introduction 5.2.4. What are the elements of a simple experiment?
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| Model equations | The
Interactions model
Y = b0 + b1 X1 + b2 X2 + b12 X1 X2. The Response Surface Model (interactions+quadratic model) Y = b0 + b1 X1 + b2 X2 + b11 X12 + b22 X22 + b12 X1 X2 Sometimes an error term �e� is added to the end of each model equation. This is done to remind us that all estimated models are approximations. |
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