# Find the Mean (Arithmetic) 11 , 9 , 7 , 6 , 8 , 2 , 15 , 1 , 12 , 15 , 14

11 , 9 , 7 , 6 , 8 , 2 , 15 , 1 , 12 , 15 , 14
The mean of a set of numbers is the sum divided by the number of terms.
11+9+7+6+8+2+15+1+12+15+1411
Simplify the numerator.
20+7+6+8+2+15+1+12+15+1411
27+6+8+2+15+1+12+15+1411
33+8+2+15+1+12+15+1411
41+2+15+1+12+15+1411
43+15+1+12+15+1411
58+1+12+15+1411
59+12+15+1411
71+15+1411
86+1411
10011
10011
Divide.
9.09‾
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.
9.1
Find the Mean (Arithmetic) 11 , 9 , 7 , 6 , 8 , 2 , 15 , 1 , 12 , 15 , 14

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