a.) Please download monthly stock prices for the last five years (should be 60 entries- one per month over 5 years) for Amazon and Ford Motor Company. Calculate the standard deviation and coefficient of variation for each of the stocks.
b.) Download monthly stock prices for the last five years for the Exchange Traded Fund SPDR S&P 500 ETF (Ticker symbol is SPY). Using this as a proxy for the market index, calculate the beta for Amazon and Ford Motor Company.