How to use the Data Chart Interpretation Tool.
Interpret the chart's axes, units and time window before explaining the pattern. Visual slope can be distorted by scale choices.
Make the workflow fit your task.
Read the chart title, axes, units, scale and time window before describing changes. Calculate absolute and relative differences only from available values. Note truncated axes, aggregation and missing periods, keeping visual impressions separate from measured amounts.
- What you provide
- Supplied chart or underlying table.
- What you get
- Trend explanation with axis and uncertainty checks.
See the input and the result.
Illustrative input and output · a teaching example, not a live WebAct run
Example input
Revenue chart rises from 100 to 120; axis starts at 95. Units and period are not supplied.
Completed example
Absolute change: +20 in the chart's units. Relative change: (120 − 100) / 100 = 20%. Presentation note: the axis begins at 95, making the visual rise more prominent than a zero-baseline view. Missing context: currency/unit and time interval; no claim about growth speed is justified.
Load this input into the prompt, then copy it to WebAct to try the task. Your result may differ from the illustration.
Decisions and troubleshooting.
Should a steep-looking line be described as rapid growth automatically?
No. Its appearance depends on scale and aspect ratio. Use the actual values and time interval to quantify change.
Why does the chart's percentage increase differ from my calculation?
Check the baseline, units and whether values are indexed or cumulative. The denominator must match the stated comparison.
Try it with your own source.
Replace the example with your material in the task prompt. Keep the requirements you need, then copy the task into WebAct.
Customize and copy the task ↑