Estimate two measures of risk. annualized standard deviation and beta for Starbucks Corporation $($SBUX$)$ and Costco Wholesale Corporation $($COST$).$ Use the monthly return data from CRSP over the period of January $2005$ to December

$2023.$ Then, explain which company is riskier and why.

Calculate the expected return for both companies. Assume that $3\mathrm{.}5\%$ is the risk$-$free rate.