More Than Just Opinion

Abstract:A critical element of a root cause analysis is scientific investigation, including examination of the failed part. Neither unconfirmed opinion nor a failure mode and effects analysis is an adequate substitute, often ignoring the problem part. Hypotheses about the failure mode should be simple, testable and refutable through empirical testing, leading to exploratory data analysis. One or more hypotheses can be refined as necessary and repeatedly tested in an iterative inductive-deductive process. Experimentation to identify and resolve the root cause can follow the plan-do-check-act cycle or Six Sigma approach. The proposed corrective action should also undergo scientific testing before …

Access this article
Other ways to access this article

Social Bookmarking

Digg, delicious, NewsVine, Furl, Google, StumbleUpon, BlogMarks, Facebook



Totally agree with this. The RCA is based on data and facts not from assumption or self-opinion. Great article, it’s full of facts.
--Sabeeha Al Falasi, 11-05-2018


Great article.
--Hermine Williams, 07-18-2017


Well done!
--Steven Cooke, 04-15-2016


Featured advertisers