What is diff between Defect density metrics and Defect Variance metrics ?

What is diff between Defect density metrics and Defect
Variance metrics ?

Question Posted / ab

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What is diff between Defect density metrics and Defect Variance metrics ?..

Answer / rekha

Defect density = No of defect found / Size
Here size can be a number of line of code, it could be no of requirement, or it can be per module.

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