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Technical Advice: Experimental Protocol and the Basic Principles of Experimental Design

Summary: This article provides a technical answer to the following question: "I just finished my organization’s Six Sigma training. We covered quite a bit of material on designing experiments. The instructor said that randomizing the design and blocking were very important, but he never explained why. He said that each design scenario requires a different analysis, but I do not understand why. Frankly, we seemed to do basically the same analysis in the software each time. I came away from the course with the impression that the instructor was making a mountain out of a molehill. Do any of these things really make a difference in how I run and analyze my experiments?"

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  • Topics: Engineering
  • Keywords: Engineering, Six Sigma, Design of experiments (DOE)
  • Author: Vining, Geoff;
  • Journal: Quality Engineering