Which statistical quality control tool uses an 80/20 bar chart to prioritize operational defects, showing that roughly 80% of problems stem from 20% of causes?

Explanation

• Pareto Chart combines bar graphs and line graphs to display defect causes in descending order of frequency.
• Based on Vilfredo Pareto’s principle (80/20 rule), it identifies the ‘vital few’ causes versus the ‘trivial many’.
• Helps management prioritize corrective actions for maximum operational impact.