Year 7 maths · W.1 · Data and sampling
Mean of a data set
Add all the values, then divide by how many there are.
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Find the mean of the data: 7, 19, 12, 18.
Answer: 14
Find the mean of the data: 14, 19, 10, 9.
Answer: 13
Find the mean of the data: 1, 14, 9, 12.
Answer: 9
Tip: Add all the values, then divide by how many there are.
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