DA0-002 Visualization and Reporting Practice Question
Which TWO of the following chart types are appropriate for showing the distribution of a continuous variable? (Choose 2.)
⚠ Common exam trap
It's easy for candidates to confuse bar charts with histograms, mistakenly thinking bar charts can show continuous distributions, but bar charts require categorical x-axis values and have gaps between bars, while histograms use continuous intervals with no gaps.
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
✓
Box plot
A box plot is correct because it visually summarizes the distribution of a continuous variable through its five-number summary (minimum, first quartile, median, third quartile, maximum), clearly showing spread, central tendency, and potential outliers. This makes it ideal for distribution analysis in data visualization contexts like the DA0-001 exam.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✓
Box plot
Why this is correct
Shows distribution summary with quartiles and outliers.
- ✗
Bar chart
Why it's wrong here
Used for categorical comparisons, not continuous distribution.
- ✗
Pie chart
Why it's wrong here
Shows parts of a whole, not distribution.
- ✗
Line chart
Why it's wrong here
Usually for trends over time, not distribution of a single variable.
- ✓
Histogram
Why this is correct
Shows frequency distribution of continuous data.
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