Find the Mean (Arithmetic) 12 , 23 , 17 , 20 , 14 , 14 , 18 , 16 , 17 , 18 , 18

$12$ , $23$ , $17$ , $20$ , $14$ , $14$ , $18$ , $16$ , $17$ , $18$ , $18$

The mean of a set of numbers is the sum divided by the number of terms.

$\frac{12 + 23 + 17 + 20 + 14 + 14 + 18 + 16 + 17 + 18 + 18}{11}$

Simplify the numerator.

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Add $12$ and $23$ .

$\frac{35 + 17 + 20 + 14 + 14 + 18 + 16 + 17 + 18 + 18}{11}$

Add $35$ and $17$ .

$\frac{52 + 20 + 14 + 14 + 18 + 16 + 17 + 18 + 18}{11}$

Add $52$ and $20$ .

$\frac{72 + 14 + 14 + 18 + 16 + 17 + 18 + 18}{11}$

Add $72$ and $14$ .

$\frac{86 + 14 + 18 + 16 + 17 + 18 + 18}{11}$

Add $86$ and $14$ .

$\frac{100 + 18 + 16 + 17 + 18 + 18}{11}$

Add $100$ and $18$ .

$\frac{118 + 16 + 17 + 18 + 18}{11}$

Add $118$ and $16$ .

$\frac{134 + 17 + 18 + 18}{11}$

Add $134$ and $17$ .

$\frac{151 + 18 + 18}{11}$

Add $151$ and $18$ .

$\frac{169 + 18}{11}$

Add $169$ and $18$ .

$\frac{187}{11}$

Divide $187$ by $11$ .

$17$

Find the Mean (Arithmetic) 12 , 23 , 17 , 20 , 14 , 14 , 18 , 16 , 17 , 18 , 18

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