What is the arithmeticmean of 7,7,11,9,8,8,14,14,11,9,15,15 ?

The arithmeticmean of 7,7,11,9,8,8,14,14,11,9,15,15 is 10.66666…

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arithmeticmean of 7,7,11,9,8,8,14,14,11,9,15,15

average

7, 7, 11, 9, 8, 8, 14, 14, 11, 9, 15, 15

10.66666 \dots

Solution steps

Compute the sum of the data set:

i = 1 \sum n a_{i} = 128

Compute the number of terms in the data set:

n = 12

Divide the sum by the number of terms and simplify:

10.66666 \dots

= 10.66666 \dots

41, - 31

43, 49

C (4, 4)

5 c h oose 3

20, 16 \frac{3}{4}, 13 \frac{1}{2}, 10 \frac{1}{4}, 7

What is the arithmeticmean of 7,7,11,9,8,8,14,14,11,9,15,15 ?
The arithmeticmean of 7,7,11,9,8,8,14,14,11,9,15,15 is 10.66666…