QA–QC Arena – Software Testing Home for beginners and experts

Cost of Quality & Cost of Defects

Cost of Quality –
1. Prevention Cost – Prevention cost is the cost of modifying the process (establishing methods & procedures, training, acquiring tools) to avoid bugs.
2. Appraisal Cost – Appraisal cost is the cost of activities designed (any type of testing) to find quality problems.
3. Failure Cost – Failure cost is the cost of fixing the bugs.

Cost of Defects
Cost of finding and fixing Defects increases over time. If an error is made and the consequent defect is detected in the requirements at Specification stage, then it is relatively cheap to find and fix.