Six Sigma Black Belt Certified Practice Exam

Which tool is suitable for selecting a single option among multiple criteria?

1. Pugh matrix

2. Kano model

3. Hypothesis testing

4. PDCA

The correct answer is: Pugh matrix

The Pugh matrix is an effective tool for selecting a single option among multiple criteria, primarily because it facilitates a structured evaluation of various options against defined criteria. This matrix allows teams to perform a comparative analysis by scoring each option based on how well they meet each criterion. The use of this matrix is advantageous because it organizes the decision-making process, making it easier to visualize which options meet the majority of the criteria effectively. Each criterion is typically weighted according to its importance, allowing for a more nuanced decision-making process. The results can be presented in a way that highlights the most favorable option, providing clarity in situations where multiple choices exist. In contrast, the other options serve different purposes: the Kano model focuses on understanding customer satisfaction related to product features, hypothesis testing is primarily used in statistical analysis to determine if there is significant evidence to support a specific claim, and PDCA (Plan-Do-Check-Act) is a continuous improvement process. While these tools have their specific applications, they do not facilitate the selection of a single option among multiple criteria in the systematic way that the Pugh matrix does.