Using the data in the following table, $8,$ consider a portfolio that maintains a $50\%$ weight on stock A and a $50\%$ weight on stock B$.$

a$.$ What is the return each year of this portfolio?

b$.$ Based on your results from part $($a$),$ compute the average return and volatility of the portfolio.

calculation in Eq$.11\mathrm{.}9.$

d$.$ Explain why the portfolio has a lower volatility than the average volatility of the two stocks.

a$.$ What is the return each year of this portfolio?

Enter the return of this portfolio for each year in the table below: $($Round to two decimal places.$)$

Data table

$($Click on the following icon in order to copy its contents into a spreadsheet.$)$