Year 8 - Statistics - Free practice

Year 8 Statistics Worksheets & Practice Tests

Population vs sample, data collection methods, bias.

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10 questions — 4 Foundation, 4 Standard, 2 Extension — with full worked solutions, calibrated to the Victorian Curriculum.

About this worksheet

Why we built it

Year 8 statistics shifts from "calculate the mean" to "why was this data collected this way". These worksheets give your student practice spotting bias, choosing the right sampling method, and interpreting reported statistics from real-world contexts.

What's covered

Sub-skills your student will practise

  • Population vs sample
  • Random, systematic and stratified sampling
  • Census vs sample - when to use each
  • Identifying bias in data collection
  • Interpreting statistical claims in the media

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Frequently asked

Questions parents ask about statistics

What's the difference between a population and a sample?

A population is the whole group you want information about - every Year 8 student in Victoria, say. A sample is a smaller subset of that population, chosen because surveying everyone is impractical.

What's a random sample?

A sample where every member of the population has an equal chance of being chosen. Random samples are less biased than non-random samples like a 'sample of the first 10 people through the door'.

What's biased data?

Data collected in a way that systematically favours certain outcomes. Surveying only swimming-club members about how often Victorian kids swim is biased, because swimmers are over-represented.

Why is sampling a Year 8 topic?

Real statistical work always involves samples - censuses are rare and expensive. Year 8 introduces sample design and bias detection so students can critique data they see in the media.

Want a real plan for the term?

Worksheets are great for repetition. A Tuterly tutor can spot the specific moves your student keeps getting wrong and fix them in one or two sessions.

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Talk to us about Year 8 statistics.

Call or message us with your student's year level and what's tripping them up - we'll point you to the right tutor.

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