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What does defect removal efficiency mean in software testing?

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Defect removal efficiency (DRE) is one of the testing metrics. It is an indicator of the efficiency of the development team to fix issues before the release.

It gets measured as the ratio of defects fixed to total the number of issues discovered.

For example, let’s say, there were 75 defects discovered during the test cycle while 62 of them got fixed by the development team at the time of measurement. The DRE would be 62/75 = 82.6%

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