Evaluate statistical claims ethically
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A report about travel time records a change from 40 to 44. What is the percentage increase relative to the original value, to one decimal place?
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Answer: 10.0%
- The change is 44 − 40 = 4.
- Divide by the original value 40, then multiply by 100.
- The increase is 10.0%.
- 4 ÷ 40 = 1/10.
- 1/10 × 100 = 10.
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Curriculum reference
Victorian Curriculum F–10 Version 2.0
Pi Leo practice scope
Link a report’s claims to its data, displays, sample and privacy practices.
Read the official VCAA curriculum description (VC2M10ST04)
These quizzes practise concepts within this topic. Multiple-choice answers alone do not demonstrate drawing, conducting an investigation or using a digital tool.
Activities to practise beyond the quiz
- Supported by the guided activity; selecting an MCQ does not demonstrate this action.
- Supported by the guided activity; selecting an MCQ does not demonstrate this action.
- VC2M10ST04-C01Check the reference value and units behind a percentage.
- VC2M10ST04-C02Analyse a real report by linking claims to displays and statistics.
- VC2M10ST04-C03Evaluate sampling, inference and privacy together.
- VC2M10ST04-C04Identify bias and ethical issues and communicate a defensible critique.
- VC2M10ST04-C05Apply and explain evaluate statistical claims ethically using calculate and explain each step.
- VC2M10ST04-C06Apply and explain evaluate statistical claims ethically using read and connect representations.
- VC2M10ST04-C07Apply and explain evaluate statistical claims ethically using compare evidence and check a claim.
- VC2M10ST04-C08Apply and explain evaluate statistical claims ethically using work backwards from what is known.
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Subskills
These practice subskills map to the curriculum topic. Guided activities cover skills beyond multiple-choice questions.
Descriptor-derived subskills
- D01Recalculate the claimCheck the reference value and units behind a percentage.
- D02Inspect the method and its effectsEvaluate sampling, inference and privacy together.
- D03Calculate and explain each stepApply and explain evaluate statistical claims ethically using calculate and explain each step.
- D04Read and connect representationsApply and explain evaluate statistical claims ethically using read and connect representations.
- D05Compare evidence and check a claimApply and explain evaluate statistical claims ethically using compare evidence and check a claim.
- D06Work backwards from what is knownApply and explain evaluate statistical claims ethically using work backwards from what is known.