Functional performance testing · Question 60 of 60
A project manager asks why as many as 601 test cases are planned for "98% accuracy with ±4% at a 95% CL", although the model achieves about 98% anyway. What is the reason?
1 answer is correct. Hard
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Answer
- D The calculation is cautious, as if nothing were known yet about the true accuracy
Explanation
The 601 cases are deliberately calculated cautiously: as if nothing were known yet about the true accuracy, which could therefore lie anywhere between 0% and 100%. That is the worst case, but in return the ±4% margin of error holds in every case. If accuracy stays high throughout, sequential testing allows stopping earlier, for example after 170 cases.