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Problem Solving

Inspect a chart's axes and time range

Read units, time range and axis baseline.

  • Time: Not specified
  • Cost: Not specified
  • Impact: Not specified
  • Difficulty: Not specified
  • Evidence not rated

Done when

Understand how presentation affects interpretation.

Read units, time range and axis baseline.

Who this is for

For chart readers; not every nonzero axis is inappropriate.

Why this matters

You can inspect values rather than only visual height.

How to do it

Guidance compiled from the references below; follow the applicability notes for this item.

  1. Read units, time range and axis baseline.
  2. Compare actual values, especially truncated bars that distort proportions.
  3. Check the source table or wider period before concluding.

Evidence and references

  • Other
    Data visualisation: charts(Opens in a new tab)UK Government Analysis FunctionTruncated bar-chart axes distort proportional comparison; line-chart axis choices require context and clear labelling. อ่านประกอบการเรียบเรียง / Accessed: 2026-10-05

Last reviewed: · Version 2

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