Problem $12-7$ Calculating Returns and Variability $[$LO$1]$

Year Returns

X Y

$113\%18\%$

$22728$

$3810$

$42025$

$51019$

Using the returns shown above, calculate the arithmetic average returns, the variances, and the standard deviations for X and Y$.($Do not round intermediate calculations. Enter your average return and standard deviation answers as a percent rounded to $2$ decimal places, e$.$g$.,32\mathrm{.}16,$ and round the variance answers to $5$ decimal places, e$.$g$.,\mathrm{.}16161.)$