Year 6 - Maths
Explain how to use the mean to make comparisons between two sets of data
Mean average
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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 will learn how to calculate the mean of a set of data and use the mean to make comparisons between two sets of information where appropriate.
Lesson Summary
You will learn to explain how to use the mean to make comparisons between two sets of information.
Key Notes
- The mean value can be used to compare two different sets of data.
- The mean is a single value which can represent a set of data.
Vocabulary To Learn
- Mean average: The mean average is a single number expressing the typical value in a set of data. It is calculated by finding the total of the set of data and dividing by how many values there are.
- Set of data: A set of data is collection of facts, such as numbers, words, measurements, observations or even just descriptions of things.
Common Mistakes To Avoid
- The mean average is used to compare different sets of data. Much of the data we see in the media uses mean average values so it is important to know how these figures are calculated.
3 Quick Questions (With Answers)
1. Solve this in steps: explain the method from this lesson and why each step matters.
The mean value can be used to compare two different sets of data. The mean is a single value which can represent a set of data.
2. Use this key word in a maths sentence and explain it clearly. 'Mean average'
The mean average is a single number expressing the typical value in a set of data. It is calculated by finding the total of the set of data and dividing by how many values there are. Use this word when showing your method, then check your final answer is reasonable.
3. Spot and fix this common maths mistake.
Mistake: The mean average is used to compare different sets of data. Much of the data we see in the media uses mean average values so it is important to know how these figures are calculated. Correction: Discuss what the mean average of a set of data represents and perhaps look at current news stories or local papers for examples of the mean average used in the media.
More Lessons In This Unit
- Explain how the mean changes when the total quantity or number of values changes Study Guide
- Explain how to calcluate the mean of a set of data including a value of zero Study Guide
- Explain the relationship between the mean and sharing equally Study Guide
- Explain why the mean is useful and when it is not appropriate Study Guide
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