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Example of a Root Cause Analysis
Root cause analysis should be a mixture of the scientic method and the
necessary tools for collecting and analyzing data as well as hypothesis gen-
eration and evaluation. Suppose a hypothetical quality engineer decides
to look for improvement opportunities, so he looks into the customer
complaint database for the past year. e quality department has limited
time to dedicate to improvement activities, so the quality engineer uses the
customer complaint data to create a Pareto chart to prioritize issues. e cus-
tomer complaints data indicate that the top three problems are rust, length
deviations, and diameter ...