Six Sigma Green Belt Certification Practice Exam

What is the calculation represented by the total number of deficiencies divided by the total number of units?

1. DPMO

2. RPN

3. DPU

4. DPO

The correct answer is: DPU

The calculation represented by the total number of deficiencies divided by the total number of units is indeed referred to as DPU, which stands for Defects Per Unit. This metric is commonly used in quality management to quantify the average number of defects found in a single unit of product. By calculating DPU, an organization can gain insights into the overall quality of its products or processes and identify areas that may need improvement. Understanding the concept of DPU is vital in Six Sigma, as it directly contributes to the overall assessment of process performance and helps in identifying trends or areas for reduction of defects. The focus on units allows companies to effectively monitor performance and apply targeted improvements. In contrast, the other options relate to different calculations in quality management. DPMO (Defects Per Million Opportunities) quantifies defects in terms of millions of opportunities and provides a basis for comparison across different processes. RPN (Risk Priority Number) is utilized in Failure Mode and Effects Analysis (FMEA) to prioritize risks based on their severity, occurrence, and detection. DPO (Defects Per Opportunity) assesses defects in relation to the total number of opportunities for defects, which might not directly correlate with the total number of units produced. Each of these metrics serves specific purposes, but