What is 80/20 rule in software tesing

Question

Hi all I have a basic idea about what is 80/20 rule. But how can we apply it to software testing? 80% results come from 20 % of couses. when we are in software requirement analysis phase we found an defect. Then how can we apply this rule into that? Thank you!

Altaf Ansari · Answer

it can work in terms of software testing and quality control: 80% of software quality is maintained by 20% of programmers 80% of bugs in an application are written by 20% of developers 80% of bugs are fixed in 20% of time 20% of a business application accounts for 80% of bugs