Using the annual returns for years $3-5$ in $ Spreadsheet $5\mathrm{.}2$ a$.$ Compute the arithmetic average return. b$.$ Compute the geometric average return. c$.$ Compute the standard deviation of returns. d$.$ Compute the Sharpe ratio, assuminq the risk$-$free rate was $6\%$ per vear. $5.$ a$.$ Arithmetic return $=(1/3)(\mathrm{.}2869)+(1/3)(\mathrm{.}1088)+(1/3)(0\mathrm{.}0491)=\mathrm{.}1483=14\mathrm{.}83\%$ b$.$ Geometric average $=(1\mathrm{.}2869\backslash$times $1\mathrm{.}1088\backslash$times $1\mathrm{.}0491)1/31=\mathrm{.}1439=14\mathrm{.}39\%$ c$.$ Standard deviation $=12\mathrm{.}37\%$ d$.$ Sharpe ratio $=(14\mathrm{.}836\mathrm{.}0)/12\mathrm{.}37=\mathrm{.}71$