Quick Answer
The answer is a pie chart and a treemap, as both are designed to show how individual parts make up a total. A pie chart divides a circle into slices proportional to each category’s contribution, while a treemap uses nested rectangles to represent proportions of a whole, making it especially effective for hierarchical data. On the Microsoft Power BI Data Analyst PL-300 exam, this concept tests your ability to select the right visual for comparing proportions, a common task in data storytelling. A frequent trap is confusing a pie chart with a line chart or scatter plot, which serve entirely different purposes—line charts track trends over time, and scatter plots reveal correlations. To avoid this, remember the memory tip: “Pie and tree show parts of the whole; lines and dots have different roles.”
This PL-300 practice question tests your understanding of visualize and analyze the data. 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.
Which TWO chart types are appropriate for comparing proportions of a whole? (Select TWO.)
Waterfall chart
Why wrong: Waterfall chart shows sequential changes.
100% stacked bar chart
100% stacked bar shows relative proportions.
Scatter plot
Why wrong: Scatter plot shows relationship between two variables.
Line chart
Why wrong: Line chart is for trends, not proportions.
Pie chart
Pie chart shows parts of a whole.
Answer choices
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
100% stacked bar chart
Options A and D are correct. Option B is wrong because a line chart shows trends over time. Option C is wrong because a scatter plot shows correlation. Option E is wrong because a waterfall chart shows cumulative changes.
Key principle: Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Answer analysis
For each option: why learners choose it and why it is or isn't the right answer here.
Waterfall chart
Why it's wrong here
Waterfall chart shows sequential changes.
100% stacked bar chart
Why this is correct
100% stacked bar shows relative proportions.
Related concept
Read the scenario before looking for a memorised answer.
Scatter plot
Why it's wrong here
Scatter plot shows relationship between two variables.
Line chart
Why it's wrong here
Line chart is for trends, not proportions.
Pie chart
Why this is correct
Pie chart shows parts of a whole.
Related concept
Read the scenario before looking for a memorised answer.
Common exam traps
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.
Trap categories for this question
Command / output trap
Waterfall chart shows sequential changes.
Detailed technical explanation
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.
Key takeaway
Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Real-world example
A cloud solutions architect for a retail company is evaluating services for a new workload. The correct answer here reflects best practice for the specific scenario described — not a general cloud recommendation. Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option. Cloud exam questions reward reading the constraint carefully: the same technology can be right or wrong depending on the use case.
What to study next
Identify which PL-300 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.
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FAQ
Visualize and analyze the data — This question tests Visualize and analyze the data — Read the scenario before looking for a memorised answer..
The correct answer is: 100% stacked bar chart — Options A and D are correct. Option B is wrong because a line chart shows trends over time. Option C is wrong because a scatter plot shows correlation. Option E is wrong because a waterfall chart shows cumulative changes.
Identify which PL-300 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.
Read the scenario before looking for a memorised answer.
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Last reviewed: Jun 21, 2026
This PL-300 practice question is part of Courseiva's free Microsoft 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 PL-300 exam.
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