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Ishikawa diagrams (also called fishbone diagrams, [1] herringbone diagrams, cause-and-effect diagrams) are causal diagrams created by Kaoru Ishikawa that show the potential causes of a specific event. [2] Common uses of the Ishikawa diagram are product design and quality defect prevention to identify potential factors causing an overall effect ...
Two primary techniques are used to perform a five whys analysis: [7] the fishbone (or Ishikawa) diagram and a tabular format. These tools allow for analysis to be branched in order to provide multiple root causes. [8]
Histogram. Pareto chart. Scatter diagram. Flow chart. Run chart. The seven basic tools of quality are a fixed set of visual exercises identified as being most helpful in troubleshooting issues related to quality. [1] They are called basic because they are suitable for people with little formal training in statistics and because they can be used ...
When conducted properly, this will take the RCA down to the deepest-seated root causes. A word of caution: Ishikawa or the Fishbone Diagram, and the 5-Whys methods, are not rigorous enough for conducting a root cause analysis. The Fishbone is from the 1940s and the 5-Whys is from the 1930, and there are much more advanced methods available.
For example, an "Is/Is Not" worksheet is a common tool employed at D2, and Ishikawa, or "fishbone," diagrams and "5-why analysis" are common tools employed at step D4. In the late 1990s, Ford developed a revised version of the 8D process that they call "Global 8D" (G8D), which is the current global standard for Ford and many other companies in ...
Measurement system analysis. A measurement system analysis (MSA) is a thorough assessment of a measurement process, and typically includes a specially designed experiment that seeks to identify the components of variation in that measurement process. Just as processes that produce a product may vary, the process of obtaining measurements and ...
Kaoru Ishikawa (石川 馨, Ishikawa Kaoru, July 13, 1915 – April 16, 1989) was a Japanese organizational theorist and a professor in the engineering faculty at the University of Tokyo who was noted for his quality management innovations. He is considered a key figure in the development of quality initiatives in Japan, particularly the ...
A quality circle is a small group of workers that work in the same area or do similar sorts of work and meet once a week for an hour to identify, analyse, and resolve work-related issues. The objective is to improve the quality, productivity, and overall performance of the company, as well as the workers' quality of life at work.