Support · Mathematics Standard 11–12 – Year 11 · Data analysis

Support Examine the merits of each measure of centre and justify where each measure is most appropriately used

Resources for the prerequisite content of this dot point: earlier-stage (or earlier sub-level) dot points in the same strand that students usually need first. Use these to fill gaps before or alongside the core lesson.

Prerequisite links are draft mappings generated from the syllabus structure (earlier stage, same strand, closest content). They are being reviewed by teachers. Spot a poor match? Tell us.

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Prerequisite dot points

Determine and justify the most appropriate measure of centre to summarise the data in its context

Stage 4 · Data analysis Draft mapping

No checked resources on this prerequisite dot point yet.

Compare and explain the relative merits of range and IQR as measures of spread

Stage 5 · Data analysis A Draft mapping

No checked resources on this prerequisite dot point yet.

Identify and explain the impact of outliers on the measures of centre and range

Stage 4 · Data analysis Draft mapping

  • Interactive toolStarter
    Maths Is Fun: Outliers
    Maths Is Fun · Interactive (browser) · Free · Link checked 2026-10-15 · No prep
    Use it for: Shows how an outlier changes mean and median.
  • PhET Center and Variability
    PhET Interactive Simulations · Interactive (browser) · Free · Link checked 2026-10-15 · Hands-on, No prep
    Use it for: Kick a soccer ball to build datasets; see how outliers shift mean, median, range and IQR.