Choose a chart for the comparison
A bar chart helps compare categories; a line chart can show change over time when dates are ordered and intervals are meaningful. Label axes, include units, and avoid decorative effects that make differences look larger than they are.
Tell a careful story
A finding should state the observation, the relevant comparison, and a limitation. Separate what the data shows from what you think may explain it. Suggest a next step that can verify the interpretation.
Try it
Create one chart for the question you chose. Add a title that states the measure and period. Write two sentences: the main observation and one limitation or follow-up question.
Key takeaways
- Match the chart to the comparison.
- Label units and time periods clearly.
- Separate observation from explanation.