What is Defect Leakage? and explain with example?

Answer Posted / balamurali

Defects missed from one leval of testing to next leval of
testing is called defect leakage.

Unit leval-> Component leval ->Integration leval -> System
leval -> Customer leval -> End user leval

Formula any leval
Defect leakage = (No of defects found on the current
leval/Total defects including the previous levals) *100

Example : System leval defects found is 45 and the total
defects thats include Unit leval -> Component leval -
>Integration leval -> System leval = 400

Then Defect leakage = (45/400)100 =11.25 percentage

Is This Answer Correct ?    32 Yes 10 No



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