Adam wants to show his stakeholders defect types ranked by frequency of occurrence. What tool should he use?
A. Pareto chart
B. Maslow's Hierarchy of Needs
C. Control chart
D. Cause and effect diagram
Answer: A. Pareto chart
Pareto charts are based on Pareto's Law (the 80/20 principle). This type of histogram shows categories of defects in order of frequency of occurrence. By ranking defect types this way, you could visually see which 20% of the causes to address in order to solve 80% of the problems.
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