Chapter 10

Back to the Basics: The Keys to Good DOE

When running an experiment, the safest assumption is that unless extraordinary precautions are taken, it will be run incorrectly.
George Box, J. Stuart Hunter, and William Hunter (see Recommended Readings)

In the last few chapters, we provided a high-level glimpse at the most sophisticated tools for design of experiments. Now we come back to Earth with the ground-level basics of design of experiments (DOE), in particular the planning stage. Barring luck, any experiment that is misguided from the start will almost certainly fail. In such cases, you can try to salvage some information with help from a statistician. However, in this role, statisticians (as Sir Ronald Fisher observed) are more ...

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