Which quantitative metric is commonly used to assess test case effectiveness?

Defect detection percentage (DDP)

Which of the following is an example of data collected from test execution that can be used to analyze test case effectiveness?

Number of test cases that passed on the first attempt

Code review comments from developers

Team member satisfaction survey results

After analyzing test execution data, a team finds that several test cases have not failed in the last 20 releases and cover the same code paths as other tests. What is the most appropriate improvement opportunity to identify?

Environment problem – the test environment is not stable enough for reliable results.

Redundancy – these test cases may be duplicative and could be consolidated or removed.

Insufficient data – more execution history is needed before any conclusion can be drawn.

Test data issue – the tests are likely using invalid test data.

A team implements a change to test cases by splitting a large, complex test into smaller focused tests. What should they do to verify that this improvement achieves the desired outcome?

Ask developers to review the new test cases for style compliance.

Immediately delete the original test case to avoid confusion.

Run the new tests once and consider the improvement successful if they pass.

Monitor defect detection rate and test execution time over the next several releases.

Certified Tester Advanced Level Test Automation Engineering

Domain 8Objective 1

Objective: Discover Opportunities for Improving Test Cases Through Data Collection and Analysis CTAL-TAE Practice Questions (Page 4)

Part of the Domain 8: Continuous Improvement domain, which makes up ~18% of our current practice bank. ISTQB does not publish an official question count, but from its 90-minute exam (~35–60 total, ~6–11 in this domain), expect 2–3 from this objective — we provide 24 practice questions to prepare you well beyond it. (estimate)

24questions here

5free pages

5concepts

Questions 16–20

16foundation · easy
Which source of data is most directly relevant for analyzing test case effectiveness in terms of defect detection?
Select an answer first
17foundation · easy
Which quantitative metric is commonly used to assess test case effectiveness?
Select an answer first
18foundation · easy
Which of the following is an example of data collected from test execution that can be used to analyze test case effectiveness?
Select an answer first
19application · medium
After analyzing test execution data, a team finds that several test cases have not failed in the last 20 releases and cover the same code paths as other tests. What is the most appropriate improvement opportunity to identify?
Select an answer first
20application · medium
A team implements a change to test cases by splitting a large, complex test into smaller focused tests. What should they do to verify that this improvement achieves the desired outcome?
Select an answer first

Finished these 5 questions?

Review the revealed explanations, or continue through the curriculum.

Next 5 questions →Back to CTAL-TAE

Free Basic Practice is a study aid with revealable answers — not a scored exam. Examers.io is independent and not affiliated with or endorsed by ISTQB. “CTAL-TAE” is a trademark of its owner, used for identification only.