08: End-of-Chapter Problems - Risk and Rates of Return a. Calculate the average rate of return for each stock during the period 2014 through 2018. Round your answers to two decimal places. Stock A: Stock B: b. Assume that someone held a portfolio consting of 50% of 5 tock A and 50% of Stack 8 . What would the realized rate of return on the portfolio have been each year? Round Your ansmeis to two decimal places. Negative volues should be indicated by a minus sign. What would the average retien on the portiolio have been durng thes peried? slound your answer to two decimal places. C. Cakulate the standard devation of returns for each stock and for the portfoto, Dound your anwwers to two decimal places