An Ishikawa (fishbone) diagram is most useful for which purpose in root cause analysis?

Ranking causes by their impact on the defect

Identifying the single most important cause of a defect

Tracking the frequency of defects over time

Visually organizing potential causes into categories to explore all possibilities

An inspection team identified three root causes: A affects 40% of defects and is easy to fix, B affects 30% and is moderately difficult, and C affects 10% and is very difficult. Which cause should be prioritized?

Cause C because it is the most challenging and interesting.

Cause B because it is moderately difficult and affects a significant portion.

Cause A because it has the highest impact and is feasible to address.

All causes equally because they are all root causes.

A team is conducting causal analysis for defects found in design inspections. They have collected data on defect types and phases. They now want to identify root causes. Which combination of steps is most effective?

Use 5 Whys on every defect found in the inspection.

Use Pareto analysis to identify the most frequent defect types, then apply 5 Whys to each of the top types.

Collect more data on the same defect types without analyzing it.

Use an Ishikawa diagram to list all possible causes and then implement actions for all of them.

What is the purpose of establishing metrics for monitoring the effectiveness of actions taken to address root causes?

To create more documentation for the process

To evaluate whether the actions have reduced the occurrence of defects

To assign blame if the actions fail

Certified Tester Expert Level Assessing Test Processes

Domain 3Objective 2

Causal Analysis During an Inspection Process CTEL-ITP-ATP Practice Questions (Page 4)

Part of the Domain 3: Analytical-based Improvement domain, which makes up ~32% of our current practice bank.

33questions here

7free pages

7concepts

Questions 16–20

16foundation · easy
Which technique is commonly used to prioritize root causes based on their frequency or impact?
Select an answer first
17foundation · easy
An Ishikawa (fishbone) diagram is most useful for which purpose in root cause analysis?
Select an answer first
18application · medium
An inspection team identified three root causes: A affects 40% of defects and is easy to fix, B affects 30% and is moderately difficult, and C affects 10% and is very difficult. Which cause should be prioritized?
Select an answer first
19expert · hard
A team is conducting causal analysis for defects found in design inspections. They have collected data on defect types and phases. They now want to identify root causes. Which combination of steps is most effective?
Select an answer first
20foundation · easy
What is the purpose of establishing metrics for monitoring the effectiveness of actions taken to address root causes?
Select an answer first

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