Guide · Quality · 6 min read
DOE (Design of Experiments): The Right Setting with Fewer Trials
A statistical method that varies several factors together, systematically, to find which most affect the output and the best setting.
What is DOE?
The classic 'one factor at a time' approach is slow and misses interactions. DOE varies factors together by plan, revealing both main effects and interactions with fewer trials. It is a core tool of Six Sigma's Improve phase.
Where it's used
Typical uses: process setting optimization, product/formulation development, defect reduction and robust design. With SPC: DOE finds the best setting, and SPC keeps that setting in control over time.
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