In quality control, it often represents the most common sources of defects, the highest occurring type of defect, or the most frequent reasons for customer complaints, and so on.
品質管理においては、パレート図はしばしば、欠陥の最も一般的な原因、最も起こりやすい欠陥の種類、顧客の苦情のうち最も頻度の高い理由などを表す。