What is usually a characteristic of Six Sigma project lengths compared to Lean?

Six Sigma projects typically have a longer duration, often ranging from 6 to 12 months. This extended timeline is primarily due to the comprehensive and rigorous nature of Six Sigma's DMAIC process (Define, Measure, Analyze, Improve, Control), which requires detailed data collection and analysis, as well as the testing and validation of solutions.

The focus in Six Sigma is on achieving a deep understanding of processes and improvements based on statistical data and analysis, which often necessitates a more extended period for proper implementation and sustainability of the changes.

In contrast, Lean projects are generally designed for quicker wins and focus on efficient processes and waste reduction. They often have shorter timelines, emphasizing rapid implementation of improvements.

The option indicating no defined timeline required does not reflect the structured nature of Six Sigma projects, which often operate under specific timeframes to achieve project goals efficiently. The option indicating the same duration as Lean projects fails to recognize the inherent differences in methodologies and objectives between Lean and Six Sigma, which ultimately affect project timelines.