DEFECT DENSITY is the number of confirmed defects detected in software/ component divided by the size of the software/ component.
- defect density: The number of defects per unit size of a work product.
The ‘defects’ are:
- confirmed and agreed upon (not just reported).
- Dropped defects are not counted.
The size is measured in one of the following:
- Function Points (FP)
- Source Lines of Code (SLOC)
Defect Density Formula / Calculation
Defect Density = Number of Defects / Size of the Software
- For comparing the relative number of defects in various software components so that high-risk components can be identified and resources focused towards them.
- For comparing software/ products so that quality of each software/ product can be quantified and resources focused towards those with low quality.
- For assessing the performance of software developers. [Take extra caution while using this though; there are many factors involved in their performance and solely using this metric to judge them would be unfair.]
Last Updated on August 31, 2020 by STF