1. What is Cause & effect Diagram ?
A cause and effect diagram is “a fish-bone diagram that presents a systematic representation of the relationship between the effect (result) and affecting factors (causes).”
Solving a problem in a scientific manner requires clarification of a cause and effect relationship, where the effect (e.g., the result of work) varies according to factors (e.g., facilities and machines used, method of work, workers, and materials and parts used).
To obtain a good work result, we must identify the effects of various factors and develop measures to improve the result accordingly.
2. When is it used and what results will be obtained?
A cause and effect diagram is mainly used to study the cause of a certain matter. As mentioned above, the use of a cause and effect diagram allows clarification of causal relation for efficient problem solving.
It is also effective in assessing measures developed and can be applied to other fields according to your needs.
Method
Usage
- Used when clarifying a cause and effect relationship. [Used during a phase to analyze causes.]
- Used to develop countermeasures. [Used during a phase to plan countermeasures.]
Result
- Can obtain a clear overall picture of causal relation. (A change in the cause triggers a variation in the result.)
- Can clarify the cause and effect relationship.
- Can list up all causes to identify important causes.
- Can determine the direction of action (countermeasure).
