Using the data in the following table,, calculate the volatility (standard deviation) of a portfolio that is 60% invested in stock A and 40% in stock B. The volatility of the portfolio is 9.63%. (Round to two decimal places.) Data table (Click on the following icon in order to copy its contents into a spreadsheet.) 2013 Year Stock A Stock B 2010 - 15% 2011 9% - 10% 19% 22% -7% Print 2012 4% 16% Done 2014 1% - 13% 2015 11% 17% X