Find the Mean 15 , 17 , 19 , 20 , 14 , 23 , 12

$15$ , $17$ , $19$ , $20$ , $14$ , $23$ , $12$

Step 1

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

$\frac{15 + 17 + 19 + 20 + 14 + 23 + 12}{7}$

Step 2

Simplify the numerator.

Add $15$ and $17$ .

$\frac{32 + 19 + 20 + 14 + 23 + 12}{7}$

Add $32$ and $19$ .

$\frac{51 + 20 + 14 + 23 + 12}{7}$

Add $51$ and $20$ .

$\frac{71 + 14 + 23 + 12}{7}$

Add $71$ and $14$ .

$\frac{85 + 23 + 12}{7}$

Add $85$ and $23$ .

$\frac{108 + 12}{7}$

Add $108$ and $12$ .

$\frac{120}{7}$

Step 3

Divide.

$17.14285714$

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.

$17.1$

Find the Mean 15 , 17 , 19 , 20 , 14 , 23 , 12

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