fishbone diagram

Fish Bone Diagram Als known is Cause-and-Effect Diagram created by Kaoru Ishikawa(1986) that show the cause of a specific common causes of the  Ishikawa diagram are product design and quality defect prevention, to identify potential factors causing an overall effect. Each cause or reason for imperfection is a source of variation. Causes are usually grouped into major categories to identify these sources of variation.

  4M 1E 1P fishbone criteria to find root cause.  
  • Methods: How the process is performed and the specific requirements for doing it, such as policies, procedures, rules, regulations and laws 
  • Machines: Any equipment, computers, tools etc. required to accomplish the job
  • Materialsr: Raw materials, parts, pens, paper, etc. used to produce the final product
  • Measurements: Data generated from the process that are used to evaluate its quality
  • People: Anyone involved with the process 
  • Environment: The conditions, such as location, time, temperature, and culture in which the process operates  
 Back to create fish bone diagram by minitab with us that is you can easy create late me start.For this article, I will use minitab in the building will be referred to as a fishbone. Cause-and-Effect Diagram to comply with the program minitab.
Dialog box items 
 1.In column: Choose if the causes are listed in a column, then enter the list of causes for the corresponding branch of the diagram. Entries in the columns can be up to 72 characters wide. Odd branches are on top (5, 3, then 1,left to right), and even branches are on the bottom (6, 4, then 2). To display diagram with the main branches but no causes,do not select any columns.
2.Constants: Choose to enter the causes as constants, then type the list of causes for the corresponding      branch of the diagram. Use a blank space between causes. Odd branches are on top (5, 3, then 1, left to right), and even branches are on the bottom (6, 4, then 2). To display diagram with the main branches but no causes, do not select any columns.
3.Label: Type the label you want to display to change the default branch labels. By default, the labels for branches 1 through 6 are (in order) Personnel, Machines, Materials, Methods, Measurements, and Environment. Odd branches areon top (5, 3, then 1, left to right), and even branches are on the bottom (6, 4, then 2). To display a blank diagram, check
Do not label branches.

Sub: Click to add sub-branches for the corresponding branch.

Effect: Type the desired text to display a label for the effect or problem that you are trying to solve. The text is displayed to the right of the diagram. You may use up to 72 characters.
Title: Type the desired text to replace the default title with your own custom title.
Do not label the branches: Check to suppress the labeling of branches.
Do not display empty branches: Check to suppress empty branches for which you have not specified data.

Note :You can change or add branches or sub-branches after you create a cause-and-effect diagram. See Add/ Change Branches 

Example of using cause-and-effect to draw a completed diagram
 Using a Pareto chart, you discovered that your parts were rejected most often due to surface flaws. This afternoon, you are meeting with members of various departments to brainstorm potential causes for these flaws. Beforehand, you decide to print a cause-and-effect (fishbone) diagram to help organize your notes during the meeting. The example below illustrates how to generate a complete cause-and-effect diagram. 

To make a cause-and-effect diagram

1 Open work sheet > sample data >  SURFACEFLAWS.MTW.

fish bone diagram
2 Choose Stat > Quality Tools > Cause-and-Effect.

3 Under Causes, choose In column for rows 1-6.
4 Enter Man, Machine, Material, Method, Measure, and Enviro in rows 1 through 6, respectively.

5 In Effect, type Surface Flaws. Click OK.
fish bone diagram
 When every step. Fishbone diagram I finally made ​​it minitab easy steps. See you in the next article.

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