Stocks A and B have the following historical returns:

Year	Stock As return	Stock Bs return
2011	(24.25%)	5.50%
2012	18.50	36.73
2013	38.67	28.25
2014	14.33	(4.50)
2015	39.13	43.86

1. Calculate the average rate of return for each stock during the period 2009 through 2013. 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 in each year from 2009 2013? What would the average return on the portfolio have been during that period?
2. 1. Calculate the standard deviation of returns for each stock and for the portfolio.
   2. Looking at the annual returns on the two stocks, would you guess that the correlation coefficient between the two stocks is closer to +0.8 or to -0.8?