Basic Math Examples

$82$ , $84$ , $70$ , $72$ , $75$ , $68$ , $86$ , $75$ , $74$ , $69$ , $74$ , $79$ , $81$ , $90$ , $76$

Step 1

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

$\frac{82 + 84 + 70 + 72 + 75 + 68 + 86 + 75 + 74 + 69 + 74 + 79 + 81 + 90 + 76}{15}$

Step 2

Simplify the numerator.

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Step 2.1

Add $82$ and $84$ .

$\frac{166 + 70 + 72 + 75 + 68 + 86 + 75 + 74 + 69 + 74 + 79 + 81 + 90 + 76}{15}$

Step 2.2

Add $166$ and $70$ .

$\frac{236 + 72 + 75 + 68 + 86 + 75 + 74 + 69 + 74 + 79 + 81 + 90 + 76}{15}$

Step 2.3

Add $236$ and $72$ .

$\frac{308 + 75 + 68 + 86 + 75 + 74 + 69 + 74 + 79 + 81 + 90 + 76}{15}$

Step 2.4

Add $308$ and $75$ .

$\frac{383 + 68 + 86 + 75 + 74 + 69 + 74 + 79 + 81 + 90 + 76}{15}$

Step 2.5

Add $383$ and $68$ .

$\frac{451 + 86 + 75 + 74 + 69 + 74 + 79 + 81 + 90 + 76}{15}$

Step 2.6

Add $451$ and $86$ .

$\frac{537 + 75 + 74 + 69 + 74 + 79 + 81 + 90 + 76}{15}$

Step 2.7

Add $537$ and $75$ .

$\frac{612 + 74 + 69 + 74 + 79 + 81 + 90 + 76}{15}$

Step 2.8

Add $612$ and $74$ .

$\frac{686 + 69 + 74 + 79 + 81 + 90 + 76}{15}$

Step 2.9

Add $686$ and $69$ .

$\frac{755 + 74 + 79 + 81 + 90 + 76}{15}$

Step 2.10

Add $755$ and $74$ .

$\frac{829 + 79 + 81 + 90 + 76}{15}$

Step 2.11

Add $829$ and $79$ .

$\frac{908 + 81 + 90 + 76}{15}$

Step 2.12

Add $908$ and $81$ .

$\frac{989 + 90 + 76}{15}$

Step 2.13

Add $989$ and $90$ .

$\frac{1079 + 76}{15}$

Step 2.14

Add $1079$ and $76$ .

$\frac{1155}{15}$

Step 3

Divide $1155$ by $15$ .

$77$