CHAPTER 1Introduction

The supplemental material is on the textbook website www.wiley.com/college/montgomery.

1.1 Strategy of Experimentation

Observing a system or process while it is in operation is an important part of the learning process and is an integral part of understanding and learning about how systems and processes work. The great New York Yankees catcher Yogi Berra said that “… you can observe a lot just by watching.” However, to understand what happens to a process when you change certain input factors, you have to do more than just watch—you actually ...

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