A control chart is used to:
A) Highlight the most critical issues to improve quality.
B) Isolate the root cause of an issue.
C) Determine whether or not a process is stable or has predictable performance.
D) Illustrate quality issues or areas for improvement.
This week’s correct answer is:
C
“Control charts are used to determine whether or not a process is stable or has predictable performance. Upper and lower specification limits are based on the requirements and reflect the maximum and minimum values allowed. Upper and lower control limits are different from specification limits. The control limits are determined using standard statistical calculations and principles to ultimately establish the natural capability for a stable process.”
A Guide to the Project Management Body of Knowledge, (PMBOK® Guide)– Sixth Edition, Project Management Institute, Inc., 2017 (page 301)
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