What is Six Sigma's role in SCM?

• A. A qualitative approach focusing on lead time.
• B. A data-driven quality methodology to reduce process variation and defects.
• C. A method to set strategic pricing.
• D. A tool to improve supplier selection.

Answer: (B)

Six Sigma in supply chain management is a data-driven quality methodology that aims to reduce process variation and defects across the end-to-end chain. By applying a structured improvement cycle, teams define the problem, measure current performance, analyze root causes, implement improvements, and put controls in place to sustain gains. This approach uses metrics like defects per million opportunities and process capability to quantify how well a process performs and where it can fail. In SCM, that translates to more consistent supplier quality, steadier production output, fewer errors in order fulfillment and shipping, reduced waste and costs, and higher customer satisfaction. It isn’t about prioritizing lead time, strategic pricing, or merely choosing suppliers; it’s about using data and statistical methods to consistently improve quality and reliability throughout the supply chain.