DA0-002 Visualization and Reporting Practice Question
A data analyst needs to show the relationship between advertising spend (in dollars) and the number of website visits. Both variables are continuous. Which chart type is most suitable?
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
✓
Scatter plot
Scatter plots are ideal for visualizing the correlation between two continuous variables.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Line chart
Why it's wrong here
Line charts are best for trends over time, not correlation between two variables.
- ✓
Scatter plot
Why this is correct
A scatter plot maps advertising spend on the x-axis and website visits on the y-axis, plotting each observation as an individual point to reveal the correlation between two continuous variables. This directly satisfies the stem’s constraint that both variables are continuous, as scatter plots are the standard chart type for visualising relationships between two quantitative measures.
- ✗
Box plot
Why it's wrong here
Box plots show distribution and outliers of a single variable, not correlation.
- ✗
Bar chart
Why it's wrong here
Bar charts compare categories, not continuous relationships.
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