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asked May 17, 2018 144k views

1 Answer

Nelle · Answer 1 · 2018-05-22T07:04:43+0000

To find the mean Just add up all the numbers, then divide by how many numbers there are.

7 sets of numbers
the sum of all numbers is 105

105 ÷ 7 = 15

so the mean of the years is 15

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