DA0-002 Visualization and Reporting Practice Question
A marketing manager wants to visualize the conversion funnel from website visits to final purchase. Which chart type is most appropriate?
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
✓
Funnel chart
Funnel charts are specifically designed to show stages in a pipeline or conversion process, with decreasing values as prospects move through the funnel.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✓
Funnel chart
Why this is correct
A funnel chart plots sequential stages with progressively narrowing bars, directly showing drop-off between website visits and final purchase. This matches the marketing manager's need to visualise conversion rates at each step of the buying journey.
- ✗
Treemap
Why it's wrong here
Treemaps encode hierarchical part-to-whole relationships as nested rectangles sized by a measure, useful for showing category composition such as revenue by product line. Funnel stages are sequential, not nested, so treemap areas would not depict the ordered drop-off from visits to purchase. A funnel chart is required for stage-by-stage attrition.
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Waterfall chart
Why it's wrong here
Waterfall charts decompose a starting total into sequential positive and negative contributions, suited to profit bridges or budget variances. A funnel's stages are cumulative drop-offs from a single population, which a funnel or bar chart shows directly; waterfall bars would imply additive gains and losses between unrelated categories rather than progressive attrition.
- ✗
Scatter plot
Why it's wrong here
Scatter plots display correlation between two continuous numeric variables across individual records, such as spend versus conversion rate. A conversion funnel is categorical stage counts, not paired measurements, so plotting points on two axes conveys no stage-to-stage drop-off. Scatter plots suit regression or outlier analysis, not sequential volume reduction.
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