Defect Removable Efficiency
The Defect Removable Efficiency (DRE) is the percentage of defects that have been removed during an activity, computed with the equation below:
DRE = (Number of Defects Removed / Number of Defects at Start of Process) * 100
The DRE can also be computed for each software development activity and plotted on a bar graph to show the relative defect removal efficiencies for each activity. Or, the DRE may be computed for a specific task or technique (e.g. design inspection, code walkthrough, unit test, 6 month operation, etc.)
We can also calculate DRE as:
DRE = A / (A+B)
where A = Defects by raised by testing team and B = Defects raised by customer
If dre <=0.8 then good product otherwise not.
Also See: some more Software Testing Metrics:
Rahnuma is a technical content writer at software testing stuff. A software engineer by degree and a dynamic content creator by passion, she brings to table over 3 years of writing experience in tech niche. Combining her enthusiasm for writing and technology, she loves to share her thoughts on the latest tech trends.
