defect detection percentage
📖 ISTQB Glossary
Official ISTQB Definition
The number of defects found by a test level, divided by the number found by that test level and any other means afterwards.
3 Ways to Think About It
The Quick Take
DDP: The proportion of defects found by testing vs total defects.
Look Closer
How effective testing was at catching bugs before release.
The Bottom Line
The percentage of all defects that were found during testing.
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