New PMP Question & Answers with explanation

The technique of comparing actual or planned project practices to those of other projects to generate ideas for improvement and to provide a basis by which to measure performance is known as:
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Which of the following tools can enhance the visibility of traditional written project plans and other documents to provide a real-time overview of the project status?
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What is a control chart?
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A software team tracing the root cause of an application failure can use this to help determine the cause(s) of the failure:
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The Cost of Quality principle includes:
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