Use the following returns for XNY returns year one X $22\mathrm{.}2\%$ Y $27\mathrm{.}6\%$ year two $-17\mathrm{.}2$ for XY $-4\mathrm{.}2$ year $310\mathrm{.}2$ XY $29\mathrm{.}6$ year $420\mathrm{.}4$ XY $-15\mathrm{.}4$ year $55\mathrm{.}2$ XY $33\mathrm{.}6.$ Calculate the average return for X and Y calculate the variance for XNY calculate the standard deviation for XNY$.$