CLSSYB-001 practice question 5 of 25

As we attempt to find a commonality of terms to assess the performance of a broad range of processes we use a key metric called the DPMO which stands for __________________________?

Full set: 120 questions
Answer options
A: Delayed production metrics output
B: Defects by management oversight
C: Defects per million opportunities Correct answer
D: Developed production management oversight
Correct Answer:
C. Defects per million opportunities
Explanation

DPMO, which stands for Defects Per Million Opportunities, is a fundamental metric in the Six Sigma methodology. It quantifies the performance of a process by measuring the number of defects for every one million opportunities for a defect to occur. This standardized metric allows for the comparison of different processes, regardless of their complexity or volume. A lower DPMO value indicates a higher level of process capability and quality. The ultimate goal of a Six Sigma process is to achieve a DPMO of 3.4 or less.

Why Incorrect

A. Delayed production metrics output: This term is incorrect. DPMO is a measure of process quality (defects), not the timeliness of reporting metrics.
B. Defects by management oversight: This describes a potential root cause for defects, not the standardized metric used to measure process performance.
D. Developed production management oversight: This is an unrelated management phrase and does not correspond to the DPMO acronym or its application in quality control.

References

1. Montgomery, D. C. (2013). Introduction to Statistical Quality Control (7th ed.). Wiley. In Chapter 1, Section 1.4.3, "Six Sigma," the text defines DPMO as "defects per million opportunities" and explains its calculation and significance in measuring process performance.

2. Pyzdek, T., & Keller, P. (2018). The Six Sigma Handbook (5th ed.). McGraw-Hill Education. Chapter 5, "Six Sigma Metrics," provides a detailed definition: "DPMO = Defects Per Million Opportunities. This is the average number of defects per unit observed during an average production run, divided by the number of opportunities to make a defect on that unit, normalized to one million."

3. Antony, J., & Banuelas, R. (2002). Key ingredients for the effective implementation of Six Sigma program. Measuring Business Excellence, 6(4), 20-27. On page 22, the article lists DPMO (defects per million opportunities) as a key Six Sigma metric for measuring process performance. DOI: https://doi.org/10.1108/13683040210451679

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