PK0-005 Tools and Documentation Practice Question
A project manager uses a control chart to monitor the number of defects found during testing. The chart shows one data point above the upper control limit (UCL). What action should the project manager take?
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
✓
Investigate the cause of the outlier
A point above the UCL indicates a special cause variation, which requires investigation to identify and address the root cause.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Ignore it, as it is within expected variation
Why it's wrong here
Above UCL is not expected; it's special cause.
- ✗
Recalculate the control limits
Why it's wrong here
Control limits are based on historical data; don't recalculate for one point.
- ✗
Reduce the sample size
Why it's wrong here
Sample size not relevant to this action.
- ✓
Investigate the cause of the outlier
Why this is correct
Special cause needs investigation.
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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.