Application of 5 Whys + Fishbone Diagram

Application of 5 Whys + Fishbone Diagram


5 Whys and Fishbone Diagram are effective tools that can be used to locate the roots causes of a problem.

5 Whys is a problem solving tool that helps to get to the root of a problem. The basic idea is to ask “Why?” whenever a problem is encountered. Typically, the initial response will not trace back to the root of the problem it will only be a symptomatic representation of the overall issue.

Fishbone Diagram goes by several names (Ishikawa, Cause & Effect, etc.) and there are a variety of ways to use. It is primarily a tool for organizing information to establish and clarify the relationships between an effect and its main causes. Fishbone Diagram is able to identify the root cause(s) of the problem so that collective actions can be taken to eliminate their recurrence, develop a picture composed of words and lines designed to show the relationship between the effect and its causes.

What is the target?

  • To understand the use of 5 Whys and Fishbone Diagram in Analyze Phase of a Six Sigma Project

Who should attend?

  • First and second level team leaders and managers
  • Quality and process improvement professionals
  • Those who are interested to become Lean Six Sigma professionals

Teaching Methodology

Interactive workshop and lecture


Certificate of Successful Completion will be awarded to students who have achieved attendance criteria.


  • Registered Professionals: HK$750
  • Six Sigma Community Buddies /Members of SSI Partners: HK$800
  • Others: HK$850

Language: Cantonese (supplemented with English)

Venue: Unit 1627, 16/F, Star House, No. 3 Salisbury Road, Tsim Sha Tsui, Kowloon


Time Slot 1: 10 May 2021 (Mon) Course Code: AWFD-21MAY10A
Time Slot 2: 16 Oct 2021 (Sat) Course Code: AWFD-21OCT16A

CPD Credit: 3.5 credits

Time: 9:30am to 1:00pm (3.5 hours per day)

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