New PMP Question & Answers with explanation

All the following result from quality audits except
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Matrix diagrams, affinity diagrams, and flowcharts are all examples of?
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Generally, where should control limits be located on a control chart?
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What is a likely result of not following the approved processes to do the work?
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To what does the following definition refer? "the point where the benefits or revenue to be received from improving quality equals the incremental cost to achieve that quality:'
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