Year 8 - Maths
Correlation
Numerical summaries of data
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This pupil-friendly study guide includes a unit summary, clear notes, common mistakes, and quick questions with answers.
Unit Summary
In this unit pupils explore the concept of measures of central tendancy, developing understanding of different types of average and their relative benefits and drawbacks. We then investigate other summaries of data such as the range and data comparison techniques.
Lesson Summary
You will learn to recognise relationships between bivariate data represented on a scatter graph.
Key Notes
- The distribution of data points may suggest positive correlation.
- The distribution of data points may suggest negative correlation.
- The distribution of data points may suggest no correlation.
- Correlation does not imply causation
Vocabulary To Learn
- Correlation: Correlation describes the extent to which the relationship is close to a linear relationship.
Common Mistakes To Avoid
- Correlation always means that one of the variables is affecting the other variable.
3 Quick Questions (With Answers)
1. Solve this in steps: explain the method from this lesson and why each step matters.
The distribution of data points may suggest positive correlation. The distribution of data points may suggest negative correlation.
2. Use this key word in a maths sentence and explain it clearly. 'Correlation'
Correlation describes the extent to which the relationship is close to a linear relationship. Use this word when showing your method, then check your final answer is reasonable.
3. Spot and fix this common maths mistake.
Mistake: Correlation always means that one of the variables is affecting the other variable. Correction: Correlation only suggests variables may be related somehow. Show examples where variables correlate because they both depend on population.
More Lessons In This Unit
- Analysing different statistical representations Study Guide
- Calculating the mean Study Guide
- Calculating the median Study Guide
- Calculating the mode Study Guide
- Changing a data point Study Guide
- Checking understanding of the mean Study Guide
- Comparing statistical representations Study Guide
- Comparing summaries of data Study Guide
- Evaluating the range Study Guide
- Problem solving with numerical summaries of data Study Guide
- Statistical problems - data collection Study Guide
- Statistical problems - data presentations Study Guide
- Statistical problems - drawing conclusions Study Guide
- Statistical problems - statistical summaries Study Guide
- Summarising data Study Guide
- Understanding and calculating the range Study Guide
- Understanding the median Study Guide
- Understanding the mode Study Guide
Browse all guides in the Year 8 Maths guide library.