DA0-002 Visualization and Reporting Practice Question
A data analyst is creating a dashboard to display monthly sales trends for the past two years. The dataset includes monthly sales figures with seasonal fluctuations. The analyst wants to highlight both the overall trend and the seasonal patterns effectively. Which TWO chart types are most appropriate for this purpose? (Select two.)
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
✓
Line chart
A line chart (A) clearly shows the overall trend over time, while a bar chart (D) allows easy comparison of monthly values, revealing seasonal peaks and troughs. A stacked area chart (B) can show cumulative trends but makes individual monthly comparisons difficult. A scatter plot (C) is for correlations, not time series. A pie chart (E) is for parts of a whole and not suitable for trends.
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 this is correct
Correct. Line charts are ideal for showing trends over time, such as monthly sales trends.
- ✗
Stacked area chart
Why it's wrong here
Incorrect. Stacked area charts are for cumulative totals and make it hard to compare individual months or see the underlying trend clearly.
- ✗
Scatter plot
Why it's wrong here
Incorrect. Scatter plots are used to show relationships between two numerical variables, not time series trends.
- ✓
Bar chart
Why this is correct
Correct. Bar charts effectively compare values across categories (months) and can highlight seasonal patterns.
- ✗
Pie chart
Why it's wrong here
Incorrect. Pie charts show proportions of a whole at a single point in time, not trends over time.
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