BestBuy and Costco
	You should pick up your two companies from the table below. Date: From 12/31/ 2015 till 11/1/2020 Stock price: Monthly For both the individual stock and your portfolio (60% and 40%) 1-What is the average return over that period? 2- What is the variance of the stock returns over that period? 3- What is the standard deviation (Volatility) of the stock returns? 4-What is the covariance and the correlation of the stock returns? Explain 5- By drawing the efficient Frontier line, explain what is the optimal portfolio.