1 / 13

Cause and Effect Diagram ( C&E, Ishikawa, Fault or Fishbone Diagram )

Cause and Effect Diagram ( C&E, Ishikawa, Fault or Fishbone Diagram ). Objective. In This Module We Will…. Define a Cause and Effect diagram Understand the elements of C&E analysis Understand why and when to use C&E diagrams Understand the importance of team involvement when brainstorming

ivan
Télécharger la présentation

Cause and Effect Diagram ( C&E, Ishikawa, Fault or Fishbone Diagram )

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Cause and Effect Diagram(C&E, Ishikawa, Fault or Fishbone Diagram)

  2. Objective In This Module We Will…. • Define a Cause and Effect diagram • Understand the elements of C&E analysis • Understand why and when to use C&E diagrams • Understand the importance of team involvement when brainstorming • Workshop on project team’s C&E Diagram

  3. Main Category Problem/ Desired Improvement Cause Root Cause Cause & Effect Diagram • The Cause and effect diagram is also called: • Fishbone Diagram-because of the way it looks • Ishakawa Diagram for the inventor, Dr. Kaoru Ishakawa.

  4. Main Category Problem/ Desired Improvement Cause Root Cause What is a Cause and Effect Diagram? • A visual tool to identify, explore and graphically display, in increasing detail, all of the suspected possible causes related to a problem or condition to discover its root causes. • Not a quantitative tool

  5. Why Use Cause & Effect Diagrams? • Focuses team on the content of the problem • Creates a snapshot of the collective knowledge of team • Creates consensus of the causes of a problem • Builds support for resulting solutions • Focuses the team on causes not symptoms • To discover the most probable causes for further analysis • To visualize possible relationships between causes for any problem current or future • To pinpoint conditions causing customer complaints, process errors or non-conforming products • To provide focus for discussion

  6. Product/Manufacturing Man Methods Machine Five Key Sources of Variation + Environment Measurement Materials Use cause and effect diagram to single out variation sources within the “5M’s + E”

  7. Transactional/Service People Procedures Policies Five Key Sources of Variation Environment + Measurement Place Use cause and effect diagram to single out variation sources within the “4P’s + M&E”

  8. Main Category Problem Cause Sub-Cause Root Cause Fishbone - Cause and Effect Diagram Causes Effect Shows various influences on a process to identify most likely root causes of problem

  9. Constructing a C&E Diagram Materials Methods Problem/ Maintenance Machinery Manpower Brainstorm to determine root causes and add those as small branches off major bones

  10. Fishbone Diagram Example Fishbone diagram sourced from GOAL/QPC Black Belt Memory Jogger published 2002

  11. Same ExampleMore Detail

  12. Physical C&E Construction • C&E Fishbone diagrams can be constructed two ways: • Paper and pen • Usually more effective when working in a team • May take multiple sheets of flip chart paper • Many teams find it helpful to do the flip chart method first because it lends itself to group dynamics. Everyone can see and participate easier. • Minitab software • Very helpful when sharing diagram with an audience outside of your team

  13. C&EWorkshop In Project Teams, complete the following items: 1. Determine the problem or “head’ of the fishbone 2. Determine if your process is Transactional/Commercial or Product/Industrial 3. Create a Cause & Effect (C&E) Fishbone diagram using: - 4 P’s and M & E (Transactional process)* - 5 M’s and E (Product process)* * Use the headings (Ps and Ms) as guidelines. Customize to better describe the process

More Related