Calculating Returns and Variability Using the following returns, calculate the arithmetic average returns, the variances, and the standard deviations for $x$ and $Y$ :

Returns

$\backslash$table$[[$Year$,x,Y$

$\begin{array}{cc}x& y\\ \text{Y}\text{e}\text{a}\text{r}112\%& 14\%\\ \text{Y}\text{e}\text{a}\text{r}224& 29\\ \text{Y}\text{e}\text{a}\text{r}3-27& -33\end{array}$

Year $414|17$

Year $519|37$