Costs of Quality

CONFORMANCE COSTS
1. Prevention 

        Preventive maintenance 

        Employee training 

        Review of design 

        Evaluation of producers, including evaluation of suppliers 

2. Appraisal 
        Statistical quality control
        Inspection
        Testing
NON-CONFORMANCE COSTS
1. Internal Failure - Defect found before release
2. External Failure - Defect found after release, decline in customer satisfaction