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sauvejd
The answer is 6.28 
To find this you just add up all the numbers, and divide it by how many numbers there are. 
hdizz
The mean is found by adding up all of the numbers and then dividing it by the amount of numbers there are.

So 2+3+4+6+8+9+12=44
44/7=6.2857142857143

Or 6.28

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