ACARA AC9M9ST02, Sampling and representation

Year 9 · Statistics

Analyse how sampling methods and the choice of display can shape survey results and support a particular point of view.

Below are free printable maths worksheets that support AC9M9ST02. Print them as PDFs, or generate a fresh one. Every maths answer key is computed in code, so it is never wrong.

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Deliver a whole lesson on AC9M9ST02 from a textbook-grade teaching unit, with a hook, worked examples, diagrams, misconceptions, and an exit ticket.

Reading data displays and sampling methods

Year 7-9 (ages 12 to 15)

Teaching guide

What students learn

Analyse how sampling methods and the choice of display can shape survey results and support a particular point of view.

How to teach it

Compare how different sampling methods and display choices change what a survey seems to say, and discuss how a display can be used to push a viewpoint.

Worked example

Why can a convenience sample give a biased result?

Answer: It may over-represent some groups and under-represent others, so it does not reflect the whole population

Generated and checked in code, so it is correct.

Watch out for

Missing a truncated axis or a loaded question that skews the story the data tells.

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Grade 9 Statistics

Set A · PDF · answer key with Pro

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More Year 9 Statistics codes: AC9M9ST01 · AC9M9ST03 · AC9M9ST04 · AC9M9ST05

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Australian Curriculum content descriptions (c) ACARA, used under CC BY 4.0. Descriptions are paraphrased. See australiancurriculum.edu.au.