Answer
$\overline{x}= 4.125$
Work Step by Step
The mean $\overline{x}$ of a set of data with $n$ values can be found using the formula:
$\overline{x} = \dfrac{\sum{x}}{n}$ (sum of all the items divided by the number of values).
Solve for the mean using the formula above to obtain:
$\overline{x}=\dfrac{7+4+3+2+8+5+1+3}{8} = \dfrac{33}{8} = 4.125$