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  2. Five whys - Wikipedia

    en.wikipedia.org/wiki/Five_whys

    Five whys (or 5 whys) is an iterative interrogative technique used to explore the cause-and-effect relationships underlying a particular problem. [1] The primary goal of the technique is to determine the root cause of a defect or problem by repeating the question "why?" five times, each time directing the current "why" to the answer of the ...

  3. Ishikawa diagram - Wikipedia

    en.wikipedia.org/wiki/Ishikawa_diagram

    Sample Ishikawa diagram shows the causes contributing to problem. The defect, or the problem to be solved, [1] is shown as the fish's head, facing to the right, with the causes extending to the left as fishbones; the ribs branch off the backbone for major causes, with sub-branches for root-causes, to as many levels as required.

  4. Root cause analysis - Wikipedia

    en.wikipedia.org/wiki/Root_cause_analysis

    In science and engineering, root cause analysis (RCA) is a method of problem solving used for identifying the root causes of faults or problems. [1] It is widely used in IT operations, manufacturing, telecommunications, industrial process control, accident analysis (e.g., in aviation, [2] rail transport, or nuclear plants), medical diagnosis, the healthcare industry (e.g., for epidemiology ...

  5. Eight disciplines problem solving - Wikipedia

    en.wikipedia.org/wiki/Eight_Disciplines_Problem...

    D4: Determine and Verify Root Causes and Escape Points: Identify all applicable causes that could explain why the problem has occurred. Also identify why the problem was not noticed at the time it occurred. All causes shall be verified or proved. One can use five whys or Ishikawa diagrams to map causes against the effect or problem identified.

  6. Ideation (creative process) - Wikipedia

    en.wikipedia.org/wiki/Ideation_(creative_process)

    The basis of the technique is to ask "why" five times to identify the primary causal factor behind a particular issue. It is suitable for a range of problem complexities and is often used in conjunction with other root cause analysis tools, such as fishbone diagrams and cause-and-effect tables. Although it may seem simplistic, the 5 Whys can be ...

  7. Event correlation - Wikipedia

    en.wikipedia.org/wiki/Event_Correlation

    Root cause analysis is the last and most complex step of event correlation. It consists of analyzing dependencies between events, based for instance on a model of the environment and dependency graphs, to detect whether some events can be explained by others.

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