of the problem. These are organised into various categories, allowing teams to explore different angles of the issue systematically. Each ‘bone’ signifies a distinct cause or factor, and further branching can detail sub-causes. This structured layout not only clarifies complex problems but also encourages comprehensive brainstorming and analysis.
Categories in fishbone diagrams
Standard categories
Fishbone diagrams
often use standard categories to organise potential causes, especially in
quality management
and engineering contexts. These categories help ensure a comprehensive analysis by covering different aspects of the problem. Commonly used categories include:
Methods
: Processes or procedures that might contribute to the issue
Materials
: Raw materials or components involved in the process
The technical storage or access that is used exclusively for statistical purposes.Machines
: Equipment or tools used, which might have faults or limitations
The technical storage or access that is used exclusively for anonymous statistical purposes. Without a subpoena, voluntary compliance on the part of your Internet Service Provider, or additional records from a third party, information stored or retrieved for this purpose alone cannot usually be used to identify you.Manpower
: Human factors, such as skills, training, or motivation
Measurements
: Data or metrics that might be inaccurate or misleading
Environment
: External conditions or settings that could affect outcomes.
MarketingThese categories offer teams a structured approach to explore potential causes.
Custom categories
While standard categories are useful, organisations often benefit from tailoring categories to their specific needs or industries. Custom categories allow teams to focus on the unique aspects of their problem domain. For instance, a software development team might include categories like
user experience
Marketing or
software architecture
. Meanwhile, a retail business might focus on
customer feedback
or

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