The objectives within the analyze stage of the define, measure, analyze, improve, and control (DMAIC) problem-solving methodology include
• Analysis of the value stream, the necessary steps that produce value for the customer
• Analysis of the sources of variation
• Determination of the process drivers, the little y’s that correlate with the stakeholder requirements and significantly influence the process output
Value-stream analysis is a key contribution to Six Sigma, borrowed from the lean methodology. (For more details on the lean methodology, refer to that section in Part 3.) The term value stream refers to the necessary activities that contribute value to the product or service, as ...