Find the Mean 20 , 16 , 18 , 9 , 20 , 16 , 14

$20$ , $16$ , $18$ , $9$ , $20$ , $16$ , $14$

Step 1

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

$\frac{20 + 16 + 18 + 9 + 20 + 16 + 14}{7}$

Step 2

Simplify the numerator.

Add $20$ and $16$ .

$\frac{36 + 18 + 9 + 20 + 16 + 14}{7}$

Add $36$ and $18$ .

$\frac{54 + 9 + 20 + 16 + 14}{7}$

Add $54$ and $9$ .

$\frac{63 + 20 + 16 + 14}{7}$

Add $63$ and $20$ .

$\frac{83 + 16 + 14}{7}$

Add $83$ and $16$ .

$\frac{99 + 14}{7}$

Add $99$ and $14$ .

$\frac{113}{7}$

Step 3

Divide.

$16.14285714$

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.

$16.1$

Find the Mean 20 , 16 , 18 , 9 , 20 , 16 , 14

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