Starter quiz
- Bias can be present in any sample collected from a ______ and may affect the results of a statistical investigation.
- 'population' ✓
- Izzy rolls a dice twice and it lands on a 6 each time. Izzy concludes the dice is biased. Is Izzy correct?
- Yes, it is definitely biased.
- Yes, the chance of 2 sixes in a row is very low
- No, Izzy needs to roll the dice two more times to be sure.
- No, Izzy needs to roll the dice many more times. ✓
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Which stage is missing from this Statistical Enquiry Cycle?- 'Planning' ✓
- Andeep wants to find out what computer game is most popular among year 10 pupils at his school. He asks 6 of his friends what their favourite game is. Which of these comments are correct?
- 6 is too small a sample. ✓
- Andeep should ask some teachers as well.
- Andeep should ask more pupils from year 10. ✓
- Andeep should ask some pupils from each year group.
- Andeep has a biased sample as his friends may like the same computer games. ✓
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- Sofia is draws a pie chart to show how often people visit the gym. Which stage of the Statistical Enquiry Cycle does this event fit in?
- Planning
- Collecting
- Processing and presenting ✓
- Interpreting
- Communicating and evaluating
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- Match each stage of the Statistical Enquiry Cycle to an event.
- Planning⇔Deciding to research different revision methods ✓
- Collecting⇔Surveying pupils to find out how they revise ✓
- Processing and presenting⇔Using a spreadsheet to analyse the data ✓
- Interpreting⇔Looking at results and deciding what they show ✓
- Communicating and evaluating⇔Concluding which revision method is most used ✓
Exit quiz
- There are ______ stages are there in the Statistical Enquiry Cycle.
- '5' ✓
- Sofia is a conducting a survey about food. One of her questions is "Healthy people eat a lot of vegetables. Do you like to eat vegetables?" What is wrong with Sofia's question?
- Her question is ambiguous.
- Her question needs a time frame.
- Her question is leading. ✓
- Her question is too open.
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Jun carries out a survey to find out how much exercise people do. How could Jun's question be improved?- Add a time frame. ✓
- Make it less leading.
- Provide response boxes. ✓
- Make it less ambiguous.
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Aisha wants to find out how much fruit people eat. What is wrong with Aisha's question?- It is leading.
- There is no option for someone who doesn't eat fruit. ✓
- There are over-lapping categories. ✓
- She shouldn't give response boxes.
- There is no option for someone who eats more than 5 pieces of fruit a day. ✓
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The Oak Headteacher wants to find out how much homework the teachers set. The Headteacher designs this question. What is wrong with their question?- The response boxes overlap.
- The question is leading.
- The responses options are ambiguous. ✓
- An open question would be better.
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- Izzy designs a questionnaire to find out how much TV people watch. Her first question is 'What is your age?' Select the most suitable response boxes.
- under 10; 10 - 18; 19 - 30; 30 - 50; 50 - 70; 70+
- under 10; 11 - 18; 19 - 30; 31 - 50; 51 - 70; 71+
- under 10; 10 - 18; 19 - 30; 31 - 50; 51 - 70; 71+ ✓
- under 10; 11 - 18; 19 - 30; 30 - 50; 50 - 70; 70+
- under 10; 10 - 18; 19 - 30; 31 - 50; 51 - 70; 70+
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Worksheet
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Presentation
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Video
Lesson Details
Key learning points
- A data collection sheet should be suitable for the type and volume of data.
- Questions should be clear and unambiguous.
- The suitability of recording data in groups should be considered.
Common misconception
Pupils may struggle to write response boxes that do not overlap for continuous data.
Remind pupils of how to write intervals using inequality symbols.
Keywords
Statistical enquiry cycle - The Statistical Enquiry Cycle is a cycle used to carry out a statistical investigation. There are five stages. This is an ongoing process as evaluation may lead to new/refined questioning.
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