Investigate relationships and change over time
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Log in to continuePlan a bivariate investigation, analyse its pattern and report what can reasonably be inferred.
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A time study records (day, height in cm): [[0, 5], [1, 8], [2, 11], [3, 14]]. What is the average rate of height change from day 0 to day 3?
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Table. 0, 5; 1, 8; 2, 11; 3, 14
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Answer: 3 cm/day
- Total height change = 14 − 5 = 9 cm.
- Elapsed time is 3 days.
- Average rate = 9/3 = 3 cm per day.
- 14 − 5 = 9.
- 9 ÷ 3 = 3.
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Curriculum reference
Victorian Curriculum F–10 Version 2.0
Pi Leo practice scope
Plan a bivariate investigation, analyse its pattern and report what can reasonably be inferred.
Read the official VCAA curriculum description (VC2M10ST05)
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- Supported by the guided activity; selecting an MCQ does not demonstrate this action.
- VC2M10ST05-C01Analyse a numerical response against time with meaningful units.
- VC2M10ST05-C02Plan and conduct a bivariate investigation with time as the independent variable.
- VC2M10ST05-C03Discuss selection, confounding and the range of observed data.
- VC2M10ST05-C04Evaluate and report findings from a complete bivariate investigation.
- VC2M10ST05-C05Apply and explain investigate relationships and change over time using calculate and explain each step.
- VC2M10ST05-C06Apply and explain investigate relationships and change over time using read and connect representations.
- VC2M10ST05-C07Apply and explain investigate relationships and change over time using compare evidence and check a claim.
- VC2M10ST05-C08Apply and explain investigate relationships and change over time using build and check a model.
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- D01Keep the observations pairedAnalyse a numerical response against time with meaningful units.
- D02Report what the design supportsDiscuss selection, confounding and the range of observed data.
- D03Calculate and explain each stepApply and explain investigate relationships and change over time using calculate and explain each step.
- D04Read and connect representationsApply and explain investigate relationships and change over time using read and connect representations.
- D05Compare evidence and check a claimApply and explain investigate relationships and change over time using compare evidence and check a claim.
- D06Build and check a modelApply and explain investigate relationships and change over time using build and check a model.