Designed experiments (DOEs) provide a very cost-effective methodology for simultaneously testing multiple factors. A DOE consists of a number of experimental runs, or trials. In each trial, the factors to be tested are set at predetermined levels. The type and size of the experiment are determined by the goals of the experimenter and the nature of the factors. Typical goals might include eliminating unimportant factors, developing a full predictive model (Y = f(X)), describing how the process inputs jointly affect the process output, and determining the optimal settings of the inputs.
|When to Use||Purpose|
|Mid-project||Use the DOE Planning Worksheet before setting up and running any DOE. The planning worksheet is a record of the goals for the experiment and the conditions under which the experiment is to be run. This document is an effective communication tool for explaining the rationale for the experiment to important stakeholders.|
None, because this tool is for documentation purposes.