DA0-002 Data Governance Practice Question
A business user asks a data analyst to include several charts in a weekly report. The user wants to see the trend of sales over the last 12 months at a glance. Which chart type should the analyst use?
⚠ Common exam trap
Candidates often confuse a stacked bar chart's ability to show cumulative totals over time with a clear trend line, but the stacked segments actually make it harder to discern the overall sales trajectory at a glance.
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 is the correct choice because it is specifically designed to display trends over continuous time intervals, such as sales over 12 months. The x-axis represents time (months), and the y-axis represents sales values, allowing the user to quickly see upward, downward, or cyclical patterns. This aligns with the requirement to visualize a trend at a glance, which is a core strength of line charts in data visualization.
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
Line charts clearly show changes and trends over continuous time periods.
- ✗
Stacked bar chart
Why it's wrong here
Stacked bars can show trends but are less direct than line charts.
- ✗
Treemap
Why it's wrong here
Treemaps display hierarchical data, not temporal trends.
- ✗
Pie chart
Why it's wrong here
Pie charts are not suitable for time series trends.
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Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
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