When is the 'Improve' phase of Six Sigma typically conducted?

The 'Improve' phase of Six Sigma is conducted after data analysis is completed because this phase focuses on identifying, testing, and implementing solutions that will lead to the improvement of processes. Prior to this phase, teams collect and analyze data during the 'Define' and 'Measure' stages to understand the root causes of the problem. Once a thorough analysis is complete and the necessary insights are gained regarding what might be causing issues, improvement strategies can be developed and validated effectively.

In this way, the 'Improve' phase benefits from the quantitative evidence gathered during data analysis, allowing for informed decision-making and the design of changes that are likely to yield positive results. This foundation ensures that the improvements made are not just based on assumptions, but rather on a solid understanding of the process performance and the areas that require enhancement.