TQM relies on quantitative methods to measure, analyze, and improve quality performance.

These are often called the Seven Basic Quality Tools (7QC Tools).

Key Metrics for Quality Control

• Defect Rate (%): Defective work / Total inspected × 100
• Rework Cost (%): Cost of rework / Total project cost × 100
• First-Time Right (FTR): % of activities completed without rework