Basic Math Examples

$88$ , $108$ , $115$ , $166$ , $181$ , $187$ , $110$ , $243$ , $135$ , $137$ , $114$ , $257$

Step 1

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

$\frac{88 + 108 + 115 + 166 + 181 + 187 + 110 + 243 + 135 + 137 + 114 + 257}{12}$

Step 2

Simplify the numerator.

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Step 2.1

Add $88$ and $108$ .

$\frac{196 + 115 + 166 + 181 + 187 + 110 + 243 + 135 + 137 + 114 + 257}{12}$

Step 2.2

Add $196$ and $115$ .

$\frac{311 + 166 + 181 + 187 + 110 + 243 + 135 + 137 + 114 + 257}{12}$

Step 2.3

Add $311$ and $166$ .

$\frac{477 + 181 + 187 + 110 + 243 + 135 + 137 + 114 + 257}{12}$

Step 2.4

Add $477$ and $181$ .

$\frac{658 + 187 + 110 + 243 + 135 + 137 + 114 + 257}{12}$

Step 2.5

Add $658$ and $187$ .

$\frac{845 + 110 + 243 + 135 + 137 + 114 + 257}{12}$

Step 2.6

Add $845$ and $110$ .

$\frac{955 + 243 + 135 + 137 + 114 + 257}{12}$

Step 2.7

Add $955$ and $243$ .

$\frac{1198 + 135 + 137 + 114 + 257}{12}$

Step 2.8

Add $1198$ and $135$ .

$\frac{1333 + 137 + 114 + 257}{12}$

Step 2.9

Add $1333$ and $137$ .

$\frac{1470 + 114 + 257}{12}$

Step 2.10

Add $1470$ and $114$ .

$\frac{1584 + 257}{12}$

Step 2.11

Add $1584$ and $257$ .

$\frac{1841}{12}$

Step 3

Divide.

$153.41\overline{6}$

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.

$153.4$