THE EXAMS POINTRead a chart before accepting its claim
Begin at the centre. Explore a branch, explain its connection, then test your recall. Tap any branch heading to fold or expand it.
In recall mode, focus or tap a branch to reveal its explanation. Branches group related ideas; they do not imply a chronological sequence.
Read a chart before accepting its claim
01 · Title and source
Identify the measure, producer and purpose.
02 · Axes and units
Check scales, zero baselines where appropriate and unit conversions.
03 · Denominator
Distinguish totals, rates, percentages and per-capita values.
04 · Comparability
Check periods, definitions, sample coverage and missing groups.
05 · Claim strength
Correlation alone does not establish causation; uncertainty and alternative explanations matter.
Connect the branches
A visually dramatic graph may represent a small change; a quiet graph may hide an important difference.
Avoid the exam trap
A truncated axis can exaggerate a visual contrast, especially in a bar chart.
Test yourself: What must be checked before comparing two percentages?
Their denominators, definitions, time periods and population coverage.
A concise revision aid with simplified connections. It supports the full chapter and primary references; it does not replace them.