Find the Mean 15 , 1 , 4 , 4 , 8 , 7 , 15 , 4 , 15 , 4 , 5

$15$ , $1$ , $4$ , $4$ , $8$ , $7$ , $15$ , $4$ , $15$ , $4$ , $5$

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

$\frac{15 + 1 + 4 + 4 + 8 + 7 + 15 + 4 + 15 + 4 + 5}{11}$

Simplify the numerator.

Add $15$ and $1$ .

$\frac{16 + 4 + 4 + 8 + 7 + 15 + 4 + 15 + 4 + 5}{11}$

Add $16$ and $4$ .

$\frac{20 + 4 + 8 + 7 + 15 + 4 + 15 + 4 + 5}{11}$

Add $20$ and $4$ .

$\frac{24 + 8 + 7 + 15 + 4 + 15 + 4 + 5}{11}$

Add $24$ and $8$ .

$\frac{32 + 7 + 15 + 4 + 15 + 4 + 5}{11}$

Add $32$ and $7$ .

$\frac{39 + 15 + 4 + 15 + 4 + 5}{11}$

Add $39$ and $15$ .

$\frac{54 + 4 + 15 + 4 + 5}{11}$

Add $54$ and $4$ .

$\frac{58 + 15 + 4 + 5}{11}$

Add $58$ and $15$ .

$\frac{73 + 4 + 5}{11}$

Add $73$ and $4$ .

$\frac{77 + 5}{11}$

Add $77$ and $5$ .

$\frac{82}{11}$

Divide.

$7.\overline{45}$

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.

$7.5$

Find the Mean 15 , 1 , 4 , 4 , 8 , 7 , 15 , 4 , 15 , 4 , 5

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