Stocks A and B have the following historical returns: Year Stock A's Returns, rA Stock B's Returns, rB 2011 - 19.50% - 14.80% 2012 35.75 17.50 2013 12.75 22.70 2014 - 1.25 - 9.20 2015 30.25 41.80 Calculate the average rate of return for stock A during the period 2011 through 2015. Round your answer to two decimal places. % Calculate the average rate of return for stock B during the period 2011 through 2015. Round your answer to two decimal places. % Assume that someone held a portfolio consisting of 50% of Stock A and 50% of Stock B. What would the realized rate of return on the portfolio have been each year? Round your answers to two decimal places. Enter a negative answer with a minus sign. Year Portfolio 2011 % 2012 2013 2014 2015 What would the average return on the portfolio have been during this period? Round your answer to two decimal places. % Calculate the standard deviation of returns for each stock and for the portfolio. Round your answers to two decimal places. Stock A Stock B Portfolio Standard Deviation % % % Calculate the coefficient of variation for each stock and for the portfolio. Round your answers to two decimal places. Stock A Stock B Portfolio CV Assuming you are a risk-averse investor, would you prefer to hold Stock A, Stock B, or the portfolio?