Pre-Algebra Examples

$5.7$ , $4.8$ , $5.4$ , $2.6$ , $4.8$ , $4.9$

Step 1

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

$\frac{5.7 + 4.8 + 5.4 + 2.6 + 4.8 + 4.9}{6}$

Step 2

Simplify the numerator.

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Step 2.1

Add $5.7$ and $4.8$ .

$\frac{10.5 + 5.4 + 2.6 + 4.8 + 4.9}{6}$

Step 2.2

Add $10.5$ and $5.4$ .

$\frac{15.9 + 2.6 + 4.8 + 4.9}{6}$

Step 2.3

Add $15.9$ and $2.6$ .

$\frac{18.5 + 4.8 + 4.9}{6}$

Step 2.4

Add $18.5$ and $4.8$ .

$\frac{23.3 + 4.9}{6}$

Step 2.5

Add $23.3$ and $4.9$ .

$\frac{28.2}{6}$

Step 3

Divide $28.2$ by $6$ .

$4.7$

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.

$4.7$