PK0-005 Tools and Documentation Practice Question
A project manager notices that a task is taking longer than planned and the project is falling behind schedule. The project manager wants to identify the root cause of the delay. Which quality tool would be most appropriate?
⚠ Common exam trap
Many candidates confuse a Pareto chart (which ranks causes by frequency) with root cause analysis, but the Pareto chart only shows what is most common, not the underlying cause-effect relationships that the cause-and-effect diagram explicitly maps.
Answer choices
Why each option matters
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Cause-and-effect diagram
The cause-and-effect diagram (also known as a fishbone or Ishikawa diagram) is the most appropriate quality tool for identifying the root cause of a delay because it systematically maps potential causes (e.g., resources, processes, environment) to the observed effect (the schedule delay). Unlike other tools that show data distribution or trends, this diagram is designed for root cause analysis by visually brainstorming and categorizing contributing factors.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Histogram
Why it's wrong here
Histogram shows frequency distribution, not causes.
- ✗
Control chart
Why it's wrong here
Control chart monitors process variation over time, not root cause analysis.
- ✓
Cause-and-effect diagram
Why this is correct
Fishbone diagram helps identify and categorize root causes.
- ✗
Pareto chart
Why it's wrong here
Pareto chart prioritizes causes, but does not identify them.
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JA
Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
This PK0-005 practice question is part of Courseiva's free CompTIA certification practice question bank. Courseiva provides original exam-style practice questions with explanations, topic-based practice, mock exams, readiness tracking, and study analytics to help learners prepare for the PK0-005 exam.