Find the Mean 12.50 , 13.23 , 11.20 , 14.50 , 12.50 , 13.23 , 15.60 , 15.75

$12.5$ , $13.23$ , $11.2$ , $14.5$ , $12.5$ , $13.23$ , $15.6$ , $15.75$

Step 1

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

$\frac{12.5 + 13.23 + 11.2 + 14.5 + 12.5 + 13.23 + 15.6 + 15.75}{8}$

Step 2

Simplify the numerator.

Add $12.5$ and $13.23$ .

$\frac{25.73 + 11.2 + 14.5 + 12.5 + 13.23 + 15.6 + 15.75}{8}$

Add $25.73$ and $11.2$ .

$\frac{36.93 + 14.5 + 12.5 + 13.23 + 15.6 + 15.75}{8}$

Add $36.93$ and $14.5$ .

$\frac{51.43 + 12.5 + 13.23 + 15.6 + 15.75}{8}$

Add $51.43$ and $12.5$ .

$\frac{63.93 + 13.23 + 15.6 + 15.75}{8}$

Add $63.93$ and $13.23$ .

$\frac{77.16 + 15.6 + 15.75}{8}$

Add $77.16$ and $15.6$ .

$\frac{92.76 + 15.75}{8}$

Add $92.76$ and $15.75$ .

$\frac{108.51}{8}$

Step 3

Divide $108.51$ by $8$ .

$13.56375$

Step 4

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.

$13.564$

Find the Mean 12.50 , 13.23 , 11.20 , 14.50 , 12.50 , 13.23 , 15.60 , 15.75

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