ACtE08 · Chapter 8Mock Test 07🏛️ Past Licensure QuestionID: ef6bd5ce
In software quality engineering and process improvement, what is the maximum permissible defect rate defined for Six Sigma quality?
In software quality engineering and process improvement, what is the maximum permissible defect rate defined for Six Sigma quality?
Multiple Choice Options
- A✓ Correct Option
3.4 defects per million opportunities
- B
14 defects per million opportunities
- C
0.4 defects per million opportunities
- D
4 defects per million opportunities
Detailed Technical Solution & Explanation
Six Sigma is a disciplined, data-driven methodology developed to eliminate defects and ensure near-perfection in processes. Assuming a standard normal distribution with a process mean shift over time, Six Sigma quality is mathematically defined as producing no more than 3.4 defects per million opportunities (DPMO), corresponding to a success/yield rate of 99.99966%.
Option Analysis:
•
Option A (3.4 defects per million opportunities): Correct; exact benchmark defect rate for Six Sigma quality level.
•
Option B (14 defects per million opportunities): Incorrect; arbitrary rate.
•
Option C (0.4 defects per million opportunities): Incorrect; represents an even more stringent level beyond .
•
Option D (4 defects per million opportunities): Incorrect; common rounded shorthand, but 3.4 DPMO is the precise standard definition.
Reference: Mock Test 07NEC Licensure Syllabus