Data table (Click on the following icon in order to copy its contents into a spreadsheet.) Year 2011 2013 Stock A 8% - 10% Stock B 30% - 5% 2010 - 2% 29% Print 2012 9% 5% Done 2014 1% -7% 2015 10% 19% I X Using the data in the following table, calculate the volatility (standard deviation) of a portfolio that is 70% invested in stock A and 30% in stock B. The volatility of the portfolio is%. (Round to two decimal places.)