Basic Math Examples

$1$ , $2$ , $4$ , $4$ , $5$ , $7$ , $8$ , $11$ , $15$ , $15$

Step 1

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

$\frac{1 + 2 + 4 + 4 + 5 + 7 + 8 + 11 + 15 + 15}{10}$

Step 2

Simplify the numerator.

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Step 2.1

Add $1$ and $2$ .

$\frac{3 + 4 + 4 + 5 + 7 + 8 + 11 + 15 + 15}{10}$

Step 2.2

Add $3$ and $4$ .

$\frac{7 + 4 + 5 + 7 + 8 + 11 + 15 + 15}{10}$

Step 2.3

Add $7$ and $4$ .

$\frac{11 + 5 + 7 + 8 + 11 + 15 + 15}{10}$

Step 2.4

Add $11$ and $5$ .

$\frac{16 + 7 + 8 + 11 + 15 + 15}{10}$

Step 2.5

Add $16$ and $7$ .

$\frac{23 + 8 + 11 + 15 + 15}{10}$

Step 2.6

Add $23$ and $8$ .

$\frac{31 + 11 + 15 + 15}{10}$

Step 2.7

Add $31$ and $11$ .

$\frac{42 + 15 + 15}{10}$

Step 2.8

Add $42$ and $15$ .

$\frac{57 + 15}{10}$

Step 2.9

Add $57$ and $15$ .

$\frac{72}{10}$

Step 3

Cancel the common factor of $72$ and $10$ .

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Step 3.1

Factor $2$ out of $72$ .

$\frac{2 (36)}{10}$

Step 3.2

Cancel the common factors.

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Step 3.2.1

Factor $2$ out of $10$ .

$\frac{2 \cdot 36}{2 \cdot 5}$

Step 3.2.2

Cancel the common factor.

$\frac{2 \cdot 36}{2 \cdot 5}$

Step 3.2.3

Rewrite the expression.

$\frac{36}{5}$

Step 4

Divide.

$7.2$