(1) Matrix diagram method definition
Matrix diagram method is to find pairs of factors from the events of multi-dimensional problems, arrange them into a matrix diagram, and then analyze the problem according to the matrix diagram to determine the key points. It is a good way to think about and explore problems through multiple factors.
In complex quality problems, there are often many pairs of quality factors. Find these pairs of factors and arrange them into rows and columns. Their intersection is the degree of mutual correlation. On this basis, find out the existing problems and the shape of the problems, so as to find ideas for solving the problems. The form of
matrix diagram is as shown in the figure. A is a certain factor group, A1, A2, A3, A4... are the specific factors belonging to the factor group A. Arrange them in rows; B is another factor group, B1 , B2, B3, B4...are the specific factors belonging to the factor group B, and arrange them into columns; the intersection point of the row and column represents the relationship between the factors A and B. According to the intersection point, whether the row and column factors are related and The degree of correlation can be used to explore the location and form of the problem, and to gain inspiration for solving the problem.
Matrix diagram form
The matrix diagram used in quality management, its paired factors are often the two sides of the quality problem that need to be focused on. For example, when there is a failure in the production process, it is necessary to focus on analyzing the phenomenon of failure and the failure. The relationship between qualifying causes. To this end, it is necessary to list all defect forms and the causes of these defects, and analyze the relationship between specific phenomena and specific causes one by one. These specific phenomena and specific causes constitute the row elements and column elements in the matrix diagram respectively. The biggest advantage of the
matrix diagram is that it is very convenient to find the intersection points of corresponding elements and will not be missed, and the relationship between corresponding elements is also clearly displayed. The matrix diagram method also has the following characteristics:
(1) can be used to analyze pairs of influencing factors.
(2) The relationship between factors is clear and easy to identify the focus.
(3) is easy to use in conjunction with system diagrams. The
matrix diagram method has a wide range of uses. In quality management, the matrix diagram method is commonly used to solve the following problems:
(1) Correspond to the hardware functions and software functions of a series of products, and find out the reasons for developing new products or improving old products. Entry point.
(2) Clarify the product quality characteristics that should be guaranteed and their relationship with the management agency or assurance department to make the quality assurance system more reliable.
(3) Clarify the relationship between the product's quality characteristics and test measurement items and test measurement instruments, and strive to strengthen the quality evaluation system or improve its efficiency.
(4) When there are multiple undesirable phenomena in the production process and they have several common causes, it is hoped to clarify the relationship between these undesirable phenomena and their causes, and then eliminate these undesirable phenomena at one stroke.
(5) conduct multivariate analysis, study where to start and how to collect data.
generally follows the following steps to create a matrix diagram:
(1) List the quality factors.
(2) arranges paired factors into rows and columns to represent their corresponding relationships.
(3) Select the appropriate matrix diagram type.
(4) indicates the degree of relationship at the intersection of paired factors. Qualitative judgment is generally made based on experience. It can be divided into three types: close relationship, relatively close relationship, general relationship (or possible relationship), and are represented by different symbols.
(5) determines the key factors that must be controlled based on the degree of relationship.
(6) makes a countermeasure table for key factors.
(2) Matrix diagram method implementation case
matrix diagram method implementation case is shown in the table.
Statistical tools and the "L"-shaped matrix diagram of personnel at all levels of the enterprise
Employee position qualification matrix table
Prepared by/Date: Reviewer/Date:
Instructions for filling in the form:
(1) "△" means apprentice or new employee , cannot work independently and needs guidance and training.
(2) “□” indicates the ability to work independently, and the operational ability of this position is not lower than “□” level.
(3) “◇” indicates the ability to work independently and to discover and solve general operational problems.
(4) "☆" means that you can work independently, can assist others in handling and solving some business problems, and can lead apprentices.
Our enterprise's digital training platform already has 580 instructors and more than 2,000 management courses. It also maintains 20% iterative updates every year to help executives and employees improve their management and work capabilities. We have provided online employee training platform systems to many well-known Fortune 500 companies. If you are interested in the online training system for employees, we can conduct an online video conference for you and explain to you the online training platform carefully designed based on the employee job quality model.
(4) "☆" means that you can work independently, can assist others in handling and solving some business problems, and can lead apprentices.
Our enterprise's digital training platform already has 580 instructors and more than 2,000 management courses. It also maintains 20% iterative updates every year to help executives and employees improve their management and work capabilities. We have provided online employee training platform systems to many well-known Fortune 500 companies. If you are interested in the online training system for employees, we can conduct an online video conference for you and explain to you the online training platform carefully designed based on the employee job quality model.
