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Tools. Humor. Knowledgepill. Soundeffects. Fairytales. Various stuff. Gwary polskie - Start. Free Travel Blog - Post To Your Blogs Photos Videos via SMS, MMS. Root cause analysis. Root cause analysis (RCA) is a method of problem solving used for identifying the root causes of faults or problems.[1] A factor is considered a root cause if removal thereof from the problem-fault-sequence prevents the final undesirable event from recurring; whereas a causal factor is one that affects an event's outcome, but is not a root cause.
Though removing a causal factor can benefit an outcome, it does not prevent its recurrence with certainty. For example, imagine a fictional segment of students who received poor testing scores. After initial investigation, it was verified that students taking tests in the final period of the school day got lower scores. Further investigation revealed that late in the day, the students lacked ability to focus. Even further investigation revealed that the reason for the lack of focus was hunger.