Answer
$\overline{x}=3.29$
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:
$\overline{x}=\dfrac{1.4+2.1+1.6+3.0+1.4+2.2+1.4+9.0+9.0+1.8}{10} = \dfrac{32.9}{10} =3.29$
