How to use a Cause-Effect Diagram for Six Sigma

Virtual Practice Lab
Practice Test
How to use a Cause-Effect Diagram for Six Sigma

This lesson covers the Cause-Effect diagram, also known as the Fishbone and/or Wishbone diagram. The Cause-Effect Diagram is:

  1. A Root cause tool
  2. Offers differing qualitative opinions
  3. A brainstorming tool
  4. Visually displays potential causes of effects
  5. Useful in a group where there is little quantitative data

The Cause-Effect diagram affords a more human-sided solution as people by nature prefer to solve a problem by utilizing data.

To construct a Fishbone Diagram, take the following steps:

  1. State the problem
    1. For example: Why is the help desk trouble ticket rate closure so low?
      1. Place this at the ‘head’ of the fishbone
  2. Begin with the most likely root cause or source of the problem. For each cause, ask ‘why’ up to five times. Circle 1-5 root causes.
  3. Several lines are used to form the ‘bones’ coming off the center at an angle
  4. These ‘bones’ or branches are labeled with different categories
  5. The categories are situation dependent and can use more of the Six Sigma standard options
  6. Verify the root causes by using data in the Pareto or Scatter Diagrams

When using the Cause and Effect Diagram, remember the four Ps of the Service Industry as well as the 6 Ms of manufacturing:

  1. Polices
  2. Procedures
  3. People
  4. Plant/Technology

The 6 Ms:

  1. Machines
  2. Methods
  3. Materials
  4. Measurements
  5. Mother Nature (environment)
  6. Manpower (people)

The Cause-Effect diagram is a great brainstorming tool which captures ideas graphically and analyzes problems systematically.

Recommended Study Material
Learn on the go.
The app designed for the modern cyber security professional.
Get it on Google PlayGet it on the App Store
Practice Labs and Exam Vouchers

Congratulations! You're taking the first step to getting certified. Get some hands on experience with available practice labs OR save some money, support Cybrary, and purchase discounted exam vouchers. Ready to earn your next industry certification? Join cyber security's largest community and start learning today.


Our Revolution

We believe Cyber Security training should be free, for everyone, FOREVER. Everyone, everywhere, deserves the OPPORTUNITY to learn, begin and grow a career in this fascinating field. Therefore, Cybrary is a free community where people, companies and training come together to give everyone the ability to collaborate in an open source way that is revolutionizing the cyber security educational experience.

Cybrary On The Go

Get the Cybrary app for Android for online and offline viewing of our lessons.

Get it on Google Play

Support Cybrary

Donate Here to Get This Month's Donor Badge

Skip to toolbar

We recommend always using caution when following any link

Are you sure you want to continue?