MANUFACTURING
Assembly Defect Pareto Chart
This Pareto chart helps a kettle assembly team see which defects deserve attention first. Loose lids and scratches dominate the recorded defects, while the cumulative line shows the share covered by each additional category. The chart can direct a root-cause review toward the few issues with the widest production impact. It does not prove the cause of any defect; it only organizes the observed counts for investigation.
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CASE ANALYSIS
Scenario
A quality team selects defect types for corrective action on an assembly line.
Key decisions
- Top defect: Loose lids lead the count.
- Combined impact: The first three defects account for most observations.
- Improvement order: Fix common mechanical issues before rarer defects.
When to reuse this
Use for a ranked count of defects from one defined production period.
FAQ
Frequently asked questions
How is a Pareto chart used in quality control?
It ranks defect types so teams can focus investigation and corrective action on the most common problems.
Does it identify root cause?
No. It identifies priorities; other analysis is needed to determine causes.
What should the data represent?
Each category should count the same kind of observation over one defined production period.
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bar-assembly-defect-pareto