Fishbone Diagram Analysis: It is an analytical method to discover the "root cause" of a problem, also known as cause and effect analysis. It can also be divided into several categories, such as problem-type, cause-type, and countermeasure-type fishbone analysis.
Steps
(1) find the problem to be solved;
(2) write the problem in the head of the fishbone;
(3) convene colleagues **** with the discussion of the possible causes of the problem, as much as possible to find out the problem;
(4) to the same problem grouped in a fishbone labeled;
(5) according to the different issues to seek advice and summarize the problem. different problems to get everyone's opinion and summarize the right reasons;
(6) take out any problem and examine why it has arisen;
(7) ask why again in response to the answer to the problem? This goes at least five or six levels deeper (asking five or six questions in a row);
(8) When, after the fifth or sixth level of depth, it is felt that it is not possible to proceed further, list the causes of these problems, followed by a list of at least 20 solutions.
Types
A. Problem fishbone diagram (there is no cause relationship between the elements and the characteristic values, but a structural composition relationship);
B. Cause fishbone diagram (the fish head is on the right, and the characteristic values are usually written as "why ...... "
C, countermeasures fishbone diagram (fish head on the left, the characteristic value is usually written in terms of "how to improve/improve ......")
Analyze the structure
A, for the problem point, choose a hierarchical approach (operations such as people, machines, materials, methods, rings, technology, etc.);
B, according to the brainstorming of each hierarchical category to identify all possible causes (factors such as people, state of affairs, time, location, resources, funds);
C, will identify the elements of the categorization, organization, and to clarify the relationship between its subordinate;
D, the analysis of the selected The most important factors;
E. Check the description of each element to ensure that the grammar is concise and the meaning is clear.
Points of analysis
a, to determine the major cause (big bone), field operations generally from the "people, machines, materials, methods, ring ring, technology" to start, management issues generally from the "people, state of affairs, time, location, resources, funds what is being performed. For human causes, it is appropriate to start analyzing from the side of action rather than thought and attitude;
d. There is a direct cause-problem relationship between the middle cause and the characteristic value, and between the small cause and the middle cause, and the small cause should be analyzed to the point that it can be directly under the countermeasures;
e. If a certain cause can be attributed to two or more factors at the same time, please take the one with the strongest correlation as the standard (if necessary). "Three presentism": that is, now to the scene to see the present, through the comparison of relative conditions, to find the strongest correlation of the important cause categorization)
f, the selection of important causes, not more than seven, and should be identified in the most unterminated cause.
Drawing process
A, fill in the head of the fish (according to why the bad way to describe), draw the main bone;
B, draw the big bone, fill in the big important cause;
C, draw the middle bone, small bone, fill in the small and medium important cause;
D, with a special symbol to identify the important factors;