Answer
Range =$3$
Sample variance = $s^{2}=1.3$
Sample standard deviation = $s =1.14$
Work Step by Step
Recall the shortcut formula for calculating the variance ($s^{2}$)$:$
$$s^{2}=\frac{\sum x_{i}^{2}-\frac{(\sum x_{i})^{2}}{n}}{n-1}$$
Create a table in which we compute $\displaystyle \sum x_{i}$ and $\displaystyle \sum x_{i}^{2}$:
$$ \begin{array}{rrr}
& x & x^{2}\\
\hline & 2 & 4\\
& 1 & 1\\
& 1 & 1\\
& 0 & 0\\
& 3 & 9\\
\hline\rm Sum & 7 & 15
\end{array}$$
Plug in the given values (there are $n=5$ data items):
$$\begin{align*}
s^{2}&= \displaystyle \frac{15-\frac{(7)^{2}}{5}}{5-1} & & \\
& =1.3 \\\\
s&= \sqrt{1.3} =1.14 \end{align*}$$
The range is the difference between the largest and smallest data item:
$$3-0=3$$