CTC Data Analysis & Reporting 2

Question 1

A test conductor notices that defect detection rates dropped significantly after the third test cycle. Which statistical technique best helps determine whether this trend is meaningful?

Accepted Answer

Control chart analysis

Answer

Control charts distinguish between common-cause variation and statistically significant shifts in a process over time.

Question 2

When computing test pass rate, a team divides passed test cases by total executed test cases. What critical data point is this formula missing?

Accepted Answer

Blocked test cases

Answer

Blocked test cases are neither passed nor failed but were not executed, so excluding them inflates the apparent pass rate.

Question 3

A CTC report shows high requirement coverage but low defect detection effectiveness. Which conclusion is most appropriate?

Accepted Answer

Test cases may lack depth and only verify happy paths

Answer

High coverage with low defect detection often indicates shallow tests that execute requirements without probing edge cases or negative scenarios.

Question 4

In a test summary report, the 'residual risk' section communicates what information to stakeholders?

Accepted Answer

Known issues and untested areas remaining at release

Answer

Residual risk quantifies the exposure remaining after testing due to unresolved defects, scope gaps, or untested functionality.

Question 5

Which metric directly measures how efficiently a test team finds defects relative to the effort invested?

Accepted Answer

Defect detection percentage (DDP)

Answer

DDP measures the proportion of total defects that testing found compared to all defects discovered (including those found post-release).

(CTC) Certified Test Conductor Practice Test

(CTC) Certified Test Conductor Practice Test

CTC Data Analysis & Reporting 2