The answer is analogous and parametric estimating. These two techniques are best suited for a rough order of magnitude estimate because they are top-down, quick approaches that rely on historical data from similar past projects, making them ideal when detailed information is scarce. On the CAPM exam, this tests your understanding of estimate accuracy ranges—a rough order of magnitude typically has a -25% to +75% variance, so the PMBOK Guide recommends using analogous or parametric methods for speed rather than bottom-up techniques. A common trap is selecting bottom-up estimating, which is too detailed and time-consuming for this early-stage estimate. To remember, think of the word “rough” as needing a “rough” comparison: analogous uses past project similarities, while parametric uses statistical parameters like cost per square foot.
CAPM Predictive Plan-Based Methodologies Practice Question
This CAPM practice question tests your understanding of predictive plan-based methodologies. Read the scenario carefully and evaluate each option against the stated constraints before committing to an answer. After answering, compare your reasoning against the explanation and wrong-answer breakdown below. Once you have made your selection, read the full explanation to reinforce the concept and understand why each distractor is designed to mislead on exam day.
A project manager is preparing a rough order of magnitude estimate. Which two techniques are best suited for this type of estimate? (Choose two)
Clue words in this question
Noticing these words before you look at the options changes how you read each choice.
Clue: "best"
Why it matters: Signals that multiple options may be partially correct. Choose the option that most directly solves the exact problem described, not the one that sounds most complete.
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Parametric estimating
Rough order of magnitude estimates use top-down techniques such as analogous and parametric estimating, which are quick and based on historical data.
Key principle: Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
✗
Bottom-up estimating
Why it's wrong here
Bottom-up is detailed and time-consuming, not suitable for rough estimates.
✓
Parametric estimating
Why this is correct
Correct: Parametric uses statistical models and parameters for rapid estimates.
Clue confirmation
The clue word "best" in the question point toward this answer.
Related concept
Read the scenario before looking for a memorised answer.
✗
Expert judgment
Why it's wrong here
Expert judgment is used in all estimates but is not a stand-alone technique for rough order of magnitude.
✗
Three-point estimating
Why it's wrong here
Three-point estimating provides ranges, but is not specifically for rough order of magnitude.
✓
Analogous estimating
Why this is correct
Correct: Analogous uses similar historical projects for high-level estimates.
Clue confirmation
The clue word "best" in the question point toward this answer.
Related concept
Read the scenario before looking for a memorised answer.
Common exam traps
Common exam trap: answer the scenario, not the keyword
Many certification questions include familiar terms but test a specific constraint. Read the exact wording before choosing an answer that is generally true but wrong for this case.
Detailed technical explanation
How to think about this question
This question should be treated as a scenario, not a definition check. Identify the problem, the constraint and the best action. Then compare each option against those facts.
KKey Concepts to Remember
Read the scenario before looking for a memorised answer.
Find the constraint that changes the correct option.
Eliminate answers that are true in general but not in this case.
Use explanations to understand the rule behind the answer.
TExam Day Tips
→Underline the problem statement mentally.
→Watch for words such as best, first, most likely and least administrative effort.
→Review why wrong options are wrong, not only why the correct option is correct.
Key takeaway
Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Real-world example
How this comes up in practice
A practitioner preparing for the CAPM exam encounters this exact type of scenario on the job. The correct answer here is not the most general option — it is the best answer for the specific constraint described. Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option. Real exam questions reward reading the full scenario before eliminating options, because the constraint defines which answer fits.
What to study next
Got this wrong? Here's your next step.
Identify which CAPM exam domain this question belongs to, then review the specific concept being tested. Practise related questions in that domain and focus on understanding why each wrong answer is tempting — not just why the correct answer is right.
Predictive Plan-Based Methodologies — This question tests Predictive Plan-Based Methodologies — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: Parametric estimating — Rough order of magnitude estimates use top-down techniques such as analogous and parametric estimating, which are quick and based on historical data.
What should I do if I get this CAPM question wrong?
Identify which CAPM exam domain this question belongs to, then review the specific concept being tested. Practise related questions in that domain and focus on understanding why each wrong answer is tempting — not just why the correct answer is right.
Are there clue words in this question I should notice?
Yes — watch for: "best". Signals that multiple options may be partially correct. Choose the option that most directly solves the exact problem described, not the one that sounds most complete.
What is the key concept behind this question?
Read the scenario before looking for a memorised answer.
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This CAPM practice question is part of Courseiva's free PMI 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 CAPM exam.
Question Discussion
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