Fishbone Model


The Fishbone Model, also known as the Ishikawa diagram or Cause-and-Effect diagram, is a visual tool used to identify the possible causes of a problem or defect. It is often used in manual testing to help testers identify the root cause of an issue and develop effective test cases to address it.

The Fishbone Model consists of a horizontal line representing the problem or defect being investigated, with lines extending from it like the bones of a fish. Each of these lines represents a possible cause or category of causes, such as equipment, process, people, or environment.

Testers can use the Fishbone Model to brainstorm possible causes of an issue and to organize their thoughts and ideas. They can also use the model to identify areas that may need further investigation and to develop test cases that target specific causes.

The Fishbone Model is known for its simplicity and flexibility, which make it a useful tool for manual testers in a variety of industries and domains. However, it can be subjective and may not identify all possible causes of a problem, so it is important for testers to use it in conjunction with other testing techniques and models.

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