What is the main advantage of having Lean processes in place before applying Six Sigma methods?

Having Lean processes in place before applying Six Sigma methods creates stability and repeatability, which are essential for effective problem solving and process improvement. Lean focuses on eliminating waste and optimizing processes, leading to streamlined operations. When processes are made more efficient and standardized through Lean, Six Sigma can be applied with greater confidence and precision.

With stable processes, it's easier to identify variations and defects, which Six Sigma aims to reduce. This foundation allows teams to focus on quality improvement and data analysis without the distraction of frequent process changes or inefficiencies. Stability ensures that improvements achieved through Six Sigma are sustainable and can lead to better overall performance in the long term.

The other options touch on important aspects of Lean and Six Sigma but do not encapsulate the foundational advantage provided by Lean processes as effectively. For instance, while Lean can help reduce costs, the primary benefit in the context of applying Six Sigma methods is the enhanced stability in processes that allows for more focused and effective analysis. Likewise, faster implementation and data analysis have their own merits but aren’t as directly tied to the essential relationship between Lean practices and Six Sigma effectiveness.