# Find the Mean (Arithmetic) 6 , 5 , 17 , 15 , 13 , 18 , 14 , 20 , 8

6 , 5 , 17 , 15 , 13 , 18 , 14 , 20 , 8
The mean of a set of numbers is the sum divided by the number of terms.
6+5+17+15+13+18+14+20+89
Simplify the numerator.
Add 6 and 5.
11+17+15+13+18+14+20+89
Add 11 and 17.
28+15+13+18+14+20+89
Add 28 and 15.
43+13+18+14+20+89
Add 43 and 13.
56+18+14+20+89
Add 56 and 18.
74+14+20+89
Add 74 and 14.
88+20+89
Add 88 and 20.
108+89
Add 108 and 8.
1169
1169
Divide.
12.8‾
The mean should be rounded to one more decimal place than the original data. If the original data were mixed, round to one decimal place more than the least precise.
12.9
Find the Mean (Arithmetic) 6 , 5 , 17 , 15 , 13 , 18 , 14 , 20 , 8

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