1/29/2009 05:29:00 PM
Other names:
- Ishikawa Diagram
- Cause-and-Effect Diagram
It's a tool to determine many possible causes for an effect or problem. It can be used to structure or brainstorming session.
It's called fishbone diagram because it has the fish bone shape like this
Source: Wiki
You can use Microsoft Visio to draw this diagram easily.
Steps to draw fishbone diagram:
1. List the problem/issue to be studied in the "head of the fish".
2. Label each ""bone" of the "fish". The major categories typically utilized are:
* The 4 M’s:
o Methods, Machines, Materials, Manpower
* The 4 P’s:
o Place, Procedure, People, Policies
* The 4 S’s:
o Surroundings, Suppliers, Systems, Skills
Note: You may use one of the four categories suggested, combine them in any fashion or make up your own. The categories are to help you organize your ideas.
3. Use an idea-generating technique (e.g., brainstorming) to identify the factors within each category that may be affecting the problem/issue and/or effect being studied. The team should ask... "What are the machine issues affecting/causing..."
4. Repeat this procedure with each factor under the category to produce sub-factors. Continue asking, "Why is this happening?" and put additional segments each factor and subsequently under each sub-factor.
5. Continue until you no longer get useful information as you ask, "Why is that happening?"
6. Analyze the results of the fishbone after team members agree that an adequate amount of detail has been provided under each major category. Do this by looking for those items that appear in more than one category. These become the 'most likely causes".
7. For those items identified as the "most likely causes", the team should reach consensus on listing those items in priority order with the first item being the most probable" cause.
- Ishikawa Diagram
- Cause-and-Effect Diagram
It's a tool to determine many possible causes for an effect or problem. It can be used to structure or brainstorming session.
It's called fishbone diagram because it has the fish bone shape like this
Source: Wiki
You can use Microsoft Visio to draw this diagram easily.
Steps to draw fishbone diagram:
1. List the problem/issue to be studied in the "head of the fish".
2. Label each ""bone" of the "fish". The major categories typically utilized are:
* The 4 M’s:
o Methods, Machines, Materials, Manpower
* The 4 P’s:
o Place, Procedure, People, Policies
* The 4 S’s:
o Surroundings, Suppliers, Systems, Skills
Note: You may use one of the four categories suggested, combine them in any fashion or make up your own. The categories are to help you organize your ideas.
3. Use an idea-generating technique (e.g., brainstorming) to identify the factors within each category that may be affecting the problem/issue and/or effect being studied. The team should ask... "What are the machine issues affecting/causing..."
4. Repeat this procedure with each factor under the category to produce sub-factors. Continue asking, "Why is this happening?" and put additional segments each factor and subsequently under each sub-factor.
5. Continue until you no longer get useful information as you ask, "Why is that happening?"
6. Analyze the results of the fishbone after team members agree that an adequate amount of detail has been provided under each major category. Do this by looking for those items that appear in more than one category. These become the 'most likely causes".
7. For those items identified as the "most likely causes", the team should reach consensus on listing those items in priority order with the first item being the most probable" cause.
Posts
