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. For which set of data is the mean 8.1?

6.6, 7.5, 8.1, 9.2, 9.8
8.1, 8.1, 8.7, 8.8, 9.9
4.2, 6.7, 8.1, 5.5, 9.1
8.5, 8.0, 8.0, 9.0, 7.0

2 Answers

2 votes
To find the mean you add all the numbers and then divide by how many there are ( in this case 5)
User Kzrbill
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2 votes
The mean is 8.1 for the set (8.5, 8.0, 8.0, 9.0, 7.0)
You can do this by adding all these numbers together and diving that answer by how many numbers there are (in this case 5).
User Robe Elckers
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8.1k points

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