In: Finance
Using the data in the following? table, and the fact that the correlation of A and B is 0.02?, calculate the volatility? (standard deviation) of a portfolio that is 80% invested in stock A and 20% invested in stock B.
            
Stock A   Stock B
2005      
-12          
16
2006       
13           20
2007         
8          
7
2008        
-1         -1
2009         
5        -12
2010         
6          15
The standard deviation of the portfolio is?