Define
Define the problem.
Who are the customers and what are important to them? What is the goal and scope of the problem? When to complete the project?
Measure
Quantify the problem.
A large amount of data is collected to identify defects
and possible causes and evaluate performance.
Analyze
Identify the cause of the problem.
Identify the gap between the current operating level and the target level, analyze and judge the root cause of the defect, and analyze it s impact on the problem to determine the priority of improvement.
Improve
Solve the root cause & verify improvement.
The specific variables that will affect the critical factors of quality are quantified, and the maximum allowable variation range of the main variables is established. Develop countermeasures to eliminate shortcomings, solve problems and prevent problems.
Control
Maintain the gains & pursue perfection.
After improving the main influencing factors, use process management and statistical tools. Confirm the improvement situation, and make improvement on the system through revision of the organizational structure to prevent repeating the same mistakes.