Populations, samples and data collection
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Log in to continueDefine the group of interest and compare census, sampling, observation and experiment.
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A survey asks 30 randomly selected students about the lunch choices of all 240 students at a school. What is the population of interest?
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Answer: All 240 students at the school.
- The question aims to describe all 240 students at this school.
- The 30 selected students are the sample; a random sample can still vary by chance.
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Curriculum reference
Victorian Curriculum F–10 Version 2.0
Pi Leo practice scope
Define the group of interest and compare census, sampling, observation and experiment.
Read the official VCAA curriculum description (VC2M8ST01)
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.
- VC2M8ST01-C01Distinguish a population from a selected sample.
- VC2M8ST01-C02Compare methods and their practical limitations.
- VC2M8ST01-C03Investigate data-collection techniques and explain their practical consequences.
- VC2M8ST01-C04Apply and explain populations, samples and data collection using calculate and explain each step.
- VC2M8ST01-C05Apply and explain populations, samples and data collection using build and check a model.
- VC2M8ST01-C06Apply and explain populations, samples and data collection using compare evidence and check a claim.
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Subskills
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Descriptor-derived subskills
- D01Who are we trying to describe?Distinguish a population from a selected sample.
- D02Choose a workable collection methodCompare methods and their practical limitations.
- D03Calculate and explain each stepApply and explain populations, samples and data collection using calculate and explain each step.
- D04Build and check a modelApply and explain populations, samples and data collection using build and check a model.
- D05Compare evidence and check a claimApply and explain populations, samples and data collection using compare evidence and check a claim.