ASQ Certified Manager of Quality / Organizational Excellence (CMQ/OE) — Question 51

Which of the following could be a cause of the control chart results?

Answer options

• A. Calculation errors
• B. New machine settings
• C. Sampling variability
• D. A sudden change in power level

Correct answer: C

Explanation

Sampling variability is a natural occurrence that can affect control chart results, making it the correct answer. Calculation errors, new machine settings, and sudden changes in power level may impact the process, but they do not inherently explain the variations found in the control chart data.