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Sophias17
Add up all the numbers and then divide it by how many number are in the set. so you would add it all up and divide by nine 
mecca99
To find the mean you first have to add up all of the numbers given to you:
2+3+3+3+4+4+8+9+9=45
After you do that you divide by the number of number:
45/9=5
The mean of 2+3+3+3+4+4+8+9+9 is 5

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