Finite Math Examples

$128$ , $122$ , $143$ , $140$ , $128$ , $150$ , $125$ , $145$ , $128$ , $140$ , $1222$ , $139$ , $135$ , $128$

Step 1

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

$\frac{128 + 122 + 143 + 140 + 128 + 150 + 125 + 145 + 128 + 140 + 1222 + 139 + 135 + 128}{14}$

Step 2

Simplify the numerator.

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Step 2.1

Add $128$ and $122$ .

$\frac{250 + 143 + 140 + 128 + 150 + 125 + 145 + 128 + 140 + 1222 + 139 + 135 + 128}{14}$

Step 2.2

Add $250$ and $143$ .

$\frac{393 + 140 + 128 + 150 + 125 + 145 + 128 + 140 + 1222 + 139 + 135 + 128}{14}$

Step 2.3

Add $393$ and $140$ .

$\frac{533 + 128 + 150 + 125 + 145 + 128 + 140 + 1222 + 139 + 135 + 128}{14}$

Step 2.4

Add $533$ and $128$ .

$\frac{661 + 150 + 125 + 145 + 128 + 140 + 1222 + 139 + 135 + 128}{14}$

Step 2.5

Add $661$ and $150$ .

$\frac{811 + 125 + 145 + 128 + 140 + 1222 + 139 + 135 + 128}{14}$

Step 2.6

Add $811$ and $125$ .

$\frac{936 + 145 + 128 + 140 + 1222 + 139 + 135 + 128}{14}$

Step 2.7

Add $936$ and $145$ .

$\frac{1081 + 128 + 140 + 1222 + 139 + 135 + 128}{14}$

Step 2.8

Add $1081$ and $128$ .

$\frac{1209 + 140 + 1222 + 139 + 135 + 128}{14}$

Step 2.9

Add $1209$ and $140$ .

$\frac{1349 + 1222 + 139 + 135 + 128}{14}$

Step 2.10

Add $1349$ and $1222$ .

$\frac{2571 + 139 + 135 + 128}{14}$

Step 2.11

Add $2571$ and $139$ .

$\frac{2710 + 135 + 128}{14}$

Step 2.12

Add $2710$ and $135$ .

$\frac{2845 + 128}{14}$

Step 2.13

Add $2845$ and $128$ .

$\frac{2973}{14}$

Step 3

Divide.

$212.35714285$

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.

$212.4$