Year 10 - Maths
Types of data
Sampling
Study Hub
Study Guides
This pupil-friendly study guide includes a unit summary, clear notes, common mistakes, and quick questions with answers.
Unit Summary
In this unit pupils will learn how to sample, and explore accuracy and limitations with various sampling strategies and data collection techniques.
Lesson Summary
You will learn to identify the different types of data.
Key Notes
- Primary data is collected first-hand, secondary data was collected by someone else.
- Qualitative data is non-numeric information, quantitative is numeric information.
- Quantitative data can be either discrete or continuous.
Vocabulary To Learn
- Primary/Secondary data: Primary data refers to data that are directly collected for specific use in an investigation. Secondary data refers to data that were previously collected for a different or unknown purpose.
- Qualitative: Qualitative data are data that are non-numerical, and usually describe a quality of something.
- Quantitative: Quantitative data are numerical data that can be counted or measured.
- Discrete: Discrete data can only take specific numerical values.
- Continuous: Continuous data can take any value on a scale to as much precision as we can measure it.
Common Mistakes To Avoid
- Pupils may think that primary data means data they collect first hand (and no one else can collect it).
3 Quick Questions (With Answers)
1. Solve this in steps: explain the method from this lesson and why each step matters.
Primary data is collected first-hand, secondary data was collected by someone else. Qualitative data is non-numeric information, quantitative is numeric information.
2. Use this key word in a maths sentence and explain it clearly. 'Primary/Secondary data'
Primary data refers to data that are directly collected for specific use in an investigation. Secondary data refers to data that were previously collected for a different or unknown purpose. Use this word when showing your method, then check your final answer is reasonable.
3. Spot and fix this common maths mistake.
Mistake: Pupils may think that primary data means data they collect first hand (and no one else can collect it). Correction: Primary data refers to data that are directly collected for specific use in an investigation. This means that a team of researchers could collect the data for you for your investigation and this is still primary data.
More Lessons In This Unit
- Advanced problem solving with sampling Study Guide
- Biased questioning Study Guide
- Capture/recapture sampling method Study Guide
- Checking understanding of statistical problems Study Guide
- Data collection Study Guide
- Problem solving with sampling Study Guide
- Sampling limitations Study Guide
- Sampling methods Study Guide
- Stratified sampling Study Guide
- The Statistical Enquiry Cycle Study Guide
Browse all guides in the Year 10 Maths guide library.