Design of Experiments is a rigorous statistically based method in which to investigate and identify the relationships between key input factors and the response of a process resulting in improved optimisation and control. The most significant benefit over the traditional, change one variable at a time approach, is that the user is able to find the interactions between two or more variables and see how they affect the output. When an approach is taken which is based upon changing one variable at a time it is quite possible that these interactions will be overlooked.
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