QA EFFECTIVENESS OR TEST EFFECTIVENESS

QA EFFECTIVENESS OR TEST EFFECTIVENESS =

Total number of internal defects X 100
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Total number of defects( i.e. Internal + External)

4 = Internal Defects raised by QA
6= External defects used by User or customer

QA effectiveness = 4/(4+6) x 100 = 40%

Goal should be to have QA effectiveness as 100%.