PK0-005 Tools and Documentation Practice Question
A project manager is analyzing quality control data and wants to identify whether process variation is due to special causes or common causes. Which TWO tools would be most helpful?
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
✓
Run chart
Control charts (with UCL/LCL) distinguish between special and common cause variation. Run charts can also show trends but may not have control limits. Cause-and-effect diagrams identify root causes, Pareto charts prioritize, histograms show distribution but not special causes.
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
Histograms show frequency distribution, not special vs common cause.
- ✓
Run chart
Why this is correct
Run charts can show non-random patterns indicating special causes.
- ✗
Cause-and-effect diagram
Why it's wrong here
Fishbone diagrams help find root causes, not distinguish variation types.
- ✓
Control chart
Why this is correct
Control charts clearly show points outside control limits (special cause).
- ✗
Pareto chart
Why it's wrong here
Pareto charts prioritize defects, not distinguish variation.
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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.