Problem $9-27$ Asset Allocation $($LG$9-2,$ LG$9-5)$ Annual and Average Returns for Stocks, Bonds, and T$-$Bills, $1950$ to $2017$

You have a portfolio with an asset allocation of $39$ percent stocks, $40$ percent long$-$term Treasury bonds, and $21$ percent T$-$bills. Use these weights and the returns given in the above table to compute the return of the portfolio in the year $2010$ and each year since. Then compute the average annual return and standard deviation of the portfolio.

Note: Do not round intermediate calculations. Round your answers to $2$ decimal places.