The answer is that the DonorType field is placed in the Values well instead of the Legend well. In a Power BI scatter chart, the Legend well is specifically designed to split data into distinct categories—each unique value in the field (e.g., Individual and Corporate) becomes a separate point on the plot. When DonorType is mistakenly added to the Values well, Power BI treats it as a numeric measure and aggregates it, causing all donors to collapse into a single combined point rather than showing separate points for each donor type. This scenario is a classic trap on the PL-300 exam, testing your understanding of how visual field wells map to chart behavior; many candidates confuse the Legend and Values roles, especially when the scatter chart’s default aggregation hides the category split. A reliable memory tip is: “Legend splits, Values sums”—if you want distinct markers for each category, always place the categorical field in the Legend or Details well, never in Values.
PL-300 Visualize and analyze the data Practice Question
This PL-300 practice question tests your understanding of visualize and analyze the data. Examine the command output carefully: the correct answer depends on what the output actually shows, not on general recall alone. 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.
You are a Power BI report creator for a non-profit organization. You have a semantic model with a 'Donations' fact table (columns: 'DonationID', 'DonorID', 'Date', 'Amount', 'CampaignID') and a 'Donors' dimension table (columns: 'DonorID', 'DonorName', 'City', 'DonorType' (Individual/Corporate)). You need to create a report page that shows a scatter chart with 'Total Donation Amount' on the X-axis and 'Number of Donations' on the Y-axis, with each point representing a donor type. You also want to add a trend line to show the correlation. When you create the scatter chart, only one point appears (for all donors combined), instead of separate points for Individual and Corporate. What is the most likely cause?
Clue words in this question
Noticing these words before you look at the options changes how you read each choice.
Clue: "most likely"
Why it matters: Probability qualifier — the question wants the most probable cause or outcome, not a guaranteed one. Eliminate low-probability options.
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
The DonorType field is placed in the 'Values' well instead of the 'Legend' well.
In a scatter chart, you need to place the category field in the 'Legend' or 'Details' well to get separate points. If you put the field in the 'Values' well, it will be aggregated. Option A is correct. Option B is incorrect because the measures are fine. Option C is incorrect because relationship is fine. Option D is incorrect because small multiples are for separate charts.
Key principle: NAT direction and interface roles matter as much as the IP address mapping. Inside/outside designation controls which traffic is translated.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
✗
The relationship between Donations and Donors is inactive.
Why it's wrong here
If relationship were inactive, measures would not work.
✓
The DonorType field is placed in the 'Values' well instead of the 'Legend' well.
Why this is correct
To get separate points for each donor type, DonorType must be in the Legend or Details well.
Clue confirmation
The clue word "most likely" in the question point toward this answer.
Related concept
Static NAT maps one inside address to one outside address.
✗
The measures are incorrectly defined; they should use SUM and COUNT respectively.
Why it's wrong here
The measures are likely correct.
✗
The scatter chart does not support multiple categories; you need to use a small multiples chart.
Why it's wrong here
Scatter charts support categories via legend.
Common exam traps
Common exam trap: NAT rules depend on direction and matching traffic
NAT is not only about the public address. The inside/outside interface roles and the ACL or rule that matches traffic are just as important.
Detailed technical explanation
How to think about this question
NAT questions usually test address translation, overload/PAT behaviour, static mappings and whether the right traffic is being translated. Read the interface direction and address terms carefully.
KKey Concepts to Remember
Static NAT maps one inside address to one outside address.
PAT allows many inside hosts to share one public address using ports.
Inside local and inside global describe the private and translated addresses.
NAT ACLs identify traffic for translation, not always security filtering.
TExam Day Tips
→Identify inside and outside interfaces first.
→Check whether the scenario needs static NAT, dynamic NAT or PAT.
→Do not confuse NAT matching ACLs with normal packet-filtering intent.
Key takeaway
NAT direction and interface roles matter as much as the IP address mapping. Inside/outside designation controls which traffic is translated.
Real-world example
How this comes up in practice
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. NAT direction and interface roles matter as much as the IP address mapping. Inside/outside designation controls which traffic is translated. 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
Got this wrong? Here's your next step.
Review the four NAT address types (inside local, inside global, outside local, outside global), PAT port overload, and static vs dynamic NAT use cases. Then practise related PL-300 NAT questions on configuration and troubleshooting.
Visualize and analyze the data — This question tests Visualize and analyze the data — Static NAT maps one inside address to one outside address..
What is the correct answer to this question?
The correct answer is: The DonorType field is placed in the 'Values' well instead of the 'Legend' well. — In a scatter chart, you need to place the category field in the 'Legend' or 'Details' well to get separate points. If you put the field in the 'Values' well, it will be aggregated. Option A is correct. Option B is incorrect because the measures are fine. Option C is incorrect because relationship is fine. Option D is incorrect because small multiples are for separate charts.
What should I do if I get this PL-300 question wrong?
Review the four NAT address types (inside local, inside global, outside local, outside global), PAT port overload, and static vs dynamic NAT use cases. Then practise related PL-300 NAT questions on configuration and troubleshooting.
Are there clue words in this question I should notice?
Yes — watch for: "most likely". Probability qualifier — the question wants the most probable cause or outcome, not a guaranteed one. Eliminate low-probability options.
What is the key concept behind this question?
Static NAT maps one inside address to one outside address.
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