Run a clear statistical investigation
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A class investigates how many items are used per person during a project about lunchtime activities. Which survey question records the required numerical variable?
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Answer: How many items did you personally use during this project?
- The question asks for each person’s count during a defined project.
- A preference or agreement question does not record the requested count.
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Curriculum reference
Victorian Curriculum F–10 Version 2.0
Pi Leo practice scope
Refine a question, collect suitable evidence and explain the result.
Read the official VCAA curriculum description (VC2M6ST03)
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.
- Supported by the guided activity; selecting an MCQ does not demonstrate this action.
- VC2M6ST03-C01Replace broad words such as better with a measurable quantity or clearly defined category. Specify the group, units and collection period. Choose an observation or neutral survey suited to the question. An ordered rating is a category, not an exact physical measurement.
- VC2M6ST03-C02Use suitable spreadsheet formats and consistent units. A zero is a known count of none; a blank is missing information. In a frequency table, total people is the sum of frequencies, while total items uses each item count multiplied by its frequency.
- VC2M6ST03-C03Valid groups can have different results. Check the collection methods before assuming an error. Describe the pattern, who responded and what remains unknown. Never change valid responses just to produce the expected conclusion.
- VC2M6ST03-C04Planning, refining and conducting a categorical/numerical investigation by observation or survey; analysing and communicating findings.
- VC2M6ST03-C05Actually collecting observations or survey responses and using spreadsheet software.
- VC2M6ST03-C06Creating and communicating an original statistical investigation, rather than selecting an MCQ response.
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Subskills
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Descriptor-derived subskills
- D01Make the investigation preciseReplace broad words such as better with a measurable quantity or clearly defined category. Specify the group, units and collection period. Choose an observation or neutral survey suited to the question. An ordered rating is a category, not an exact physical measurement.
- D02Keep the record meaningfulUse suitable spreadsheet formats and consistent units. A zero is a known count of none; a blank is missing information. In a frequency table, total people is the sum of frequencies, while total items uses each item count multiplied by its frequency.
- D03Report findings without forcing agreementValid groups can have different results. Check the collection methods before assuming an error. Describe the pattern, who responded and what remains unknown. Never change valid responses just to produce the expected conclusion.