Explain how the mean changes when the total quantity or number of values changes
I can explain how the mean changes when the total quantity or number of values changes
Explain how the mean changes when the total quantity or number of values changes
I can explain how the mean changes when the total quantity or number of values changes
These resources will be removed by end of Summer Term 2025.
Lesson details
Key learning points
- When the total value of the set increases, the mean average increases.
- When the total value of the set decreases, the mean average decreases.
- When the number of values changes, the total quantity must be divided by the new number of values.
Keywords
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 a collection of facts, such as numbers, words, measurements, observations or even just descriptions of things.
Common misconception
Not realising that if you change the number of values in the set, you must divide the total by the new number of values and that this affects the value of the mean average.
Use the definition of the mean average to check that the total of the set of data is correctly calculated and that the number of values in the set of data is correctly identified in all examples and contexts.
To help you plan your year 6 maths lesson on: Explain how the mean changes when the total quantity or number of values changes, download all teaching resources for free and adapt to suit your pupils' needs...
To help you plan your year 6 maths lesson on: Explain how the mean changes when the total quantity or number of values changes, download all teaching resources for free and adapt to suit your pupils' needs.
The starter quiz will activate and check your pupils' prior knowledge, with versions available both with and without answers in PDF format.
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Starter quiz
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Exit quiz
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