This worksheet guides students through statistical investigations, from writing fair survey questions to collecting data, choosing and drawing displays, and checking conclusions. The worksheet is split into warm-up questions, standard questions and then extension questions to test you.
The concepts it covers:
- A statistical question expects answers that vary, like "How do students in our class get to school?". "What time does school start?" has only one answer, so it is not statistical.
- An investigation has four steps: pose a question → collect data → display the data → interpret and report.
- A fair survey question doesn't push people towards an answer, and it gives a balanced set of choices.
- Column graphs suit categories; line graphs suit change over time; dot plots suit small sets of numbers.
What your child will practise:
- Deciding whether a question is statistical.
- Spotting biased survey questions, rewriting them fairly.
- Choosing a suitable data display.
- Totaling and comparing data collected over several days or groups.
- Deciding whether a conclusion fits the data that was collected.
Every section opens with a worked example, and the download includes a full answer key with step-by-step solutions and teaching notes on the mistakes students most commonly make.
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