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Five Root Cause Analysis Tools for More Effective Problem-Solving

Achieving sustainable continuous improvement

Paul Foster
Mon, 11/19/2018 - 12:03
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Next to defining a problem accurately, root cause analysis is one of the most important elements of problem-solving in quality management. That’s because if you’re not aiming at the right target, you’ll never be able to eliminate the real problem that’s hurting quality.

So which type of root cause analysis tool is the best one to use? Manufacturers have a range of methods at their fingertips, each of which is appropriate for different situations. Below we discuss five common root cause analysis tools, including:
• Pareto chart
• The 5 Whys
• Fishbone diagram
• Scatter diagram
• Failure mode and effects analysis (FMEA)

1. Pareto chart

A Pareto chart is a histogram or bar chart combined with a line graph that groups the frequency or cost of different problems to show their relative significance. The bars show frequency in descending order, while the line shows cumulative percentage or total as you move from left to right.


Figure 1: Pareto chart

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