Six Sigma Black Belt Certified Practice Exam

What is the most important aspect of functional requirements?

1. Describe a single, measurable performance

2. Describe how a product or service should operate

3. Be traceable to the voice of the customer

4. Provide upper and lower performance limits

The correct answer is: Be traceable to the voice of the customer

The most important aspect of functional requirements is that they must be traceable to the voice of the customer. This principle emphasizes the necessity for functional requirements to directly reflect the needs, expectations, and desires of customers. Capturing the voice of the customer ensures that the end product or service aligns with what customers need and seek, ultimately leading to greater satisfaction and acceptance in the market. This traceability is critical because it serves as a foundation for developing requirements that are not only relevant but also validated against customer expectations. When requirements are solidly based on customer input, teams can avoid the risk of creating features that may not resonate with the target audience or might even detract from the overall value perceived by customers. While other aspects such as measurable performance, operation descriptions, and performance limits are important, they all stem from a thorough understanding of and alignment with the voice of the customer. Without this alignment, even well-defined functional requirements may miss the mark in delivering a product that is truly valued by its users.