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The arithmetic mean of a set of numbers is found by dividing the sum of all the numbers by how many numbers there are.

In this case the arithmetic mean is:

(8 + 7 + 7 + 5 + 3 + 2 + 2) / 7 ---> because there are 7 pieces of data.

= 34 / 7

= 4.857 ( to 3 d.p.)

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Q: What is the average arithmetic mean of 8 7 7 5 3 2 and 2?
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