What is the purpose of a flowchart in quality analysis?

• A. To identify potential root causes.
• B. To measure process capability.
• C. To map the sequence of steps, decisions, and flows in a process to identify potential failure points.
• D. To plot the distribution of a variable.

Answer: (C)

Flowcharts in quality analysis visualize how a process unfolds by laying out the sequence of steps, where decisions happen, and how information or materials move between steps. This clear picture helps you spot where things can go wrong—such as a step that’s prone to error, a handoff that could cause miscommunication, or a bottleneck where defects are more likely to occur. By seeing the entire flow, you can discuss and analyze potential failure points, identify non-value-added or unnecessary steps, and determine where to place controls or checks to improve reliability and quality.

Flowcharts aren’t about measuring process capability or plotting distributions, which rely on data and other tools. They also don’t directly identify root causes; instead, they map the process so subsequent analysis and problem-solving can be targeted where failures are most likely to arise.