Often, identifying the main problem is not straightforward. In such cases, a short brainstorming session is helpful. Draw a diagram as shown below. Write the problem inside a box and draw an arrow towards the box from the left side of the paper.

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A cause and effect diagram examines why something happened or might happen by organizing potential causes into smaller categories. It can also be useful for showing relationships between contributing factors. One of the Seven Basic Tools of Quality, it is often referred to as a fishbone diagram or Ishikawa diagram.

Cause and Effect Analysis To begin making a cause and effect diagram, write the main issue or problem to be analyzed in a box that is typically on the right edge of the page, halfway down the drawing area or page. Next, angle branches off of the spine, each representing a cause or effect of the main issue. Each of these branches can contain additional branches. Most cause and effect diagrams examine a similar set of possible causes for any issue analyzed. In the manufacturing industry, these are referred to as the 6Ms: Methods.

Are there well-written and appropriate training guidelines in place? Are certain policies or regulations causing slow-downs or creating unnecessary steps? Are there any maintenance issues with the tools used or the number of tools available?

Are there any issues getting raw materials from suppliers? Any problems with transportation timing or with the quality of the supplies? Could there be errors in calculation or contamination that caused false readings? Could the way you measure be inconsistent in some way? Is your equipment regularly calibrated and maintained? Is there too much moisture in the environment? Are temperatures too hot or too cold? Is there excessive dust or other contamination?

Do you have too little of your workforce devoted to a process? Are new people adequately trained? Is the training consistent? Are the right people with the right experience being hired or promoted?

Is there a specific position creating a bottleneck or making frequent mistakes? Occasionally, a manufacturing analysis will also include two other categories: Management and Maintenance. In the service industry, these are described as the 4S: Surroundings. Does your establishment project the right image? Is it run-down? Is it impersonal? Is it comfortable?

Are there any issues delivering your service? Do you have problems with low quality food deliveries? Are there too many dropped phone calls? Can your server handle traffic spikes?

Do you have policies and procedures in place for all scenarios? Do you have modern cash registers that help your servers place orders and deliver checks efficiently? Are your employees properly trained? Do they have the right experience? Occasionally, a fifth category will be included called "Safety".

In the marketing industry, cause and effect diagrams will often consist of 7Ps: Product. When people buy your product or service they may interact with many people: sales people, customer service people, delivery people, and so on.

Are there any potential problems with your company culture? How do you handle problems when they arise? Are they escalated properly? Is your staff trained appropriately and do they follow their training? Consider advertising, sales, PR, branding, direct marketing, partnerships, and social media.

How does the price of your product or service compare to competitors? What discounts and payment methods are available? How is your product or service consumed? Is how or where you present your product hurting your ability to convert? Are your facilities clean and tidy? Is the packaging cheap or expensive? Is your distribution efficient and cost-effective? Is your product sold in the right stores or neighborhoods? Are your stores convenient for your target customers?

How to Make Cause and Effect Diagrams with SmartDraw SmartDraw makes creating cause and effect diagrams easy with built-in smart templates that let you add new causes in a single click and format your diagram automatically.

Learn how by reading this cause and effect chart tutorial.


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Daizragore Team-oriented Cause and Effect Analysis. Encouragez la participation oshikawa groupe et utilisez les connaissances du groupe sur le processus. Ces causes principales deviennent les noms des branches secondaires de votre diagramme. Points forts diagramme de causes et effets.


Diagramme de Causes et Effets | Diagramme Arêtes de Poisson (Kaoru Ishikawa)


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