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.) Data table (Click on the following icon in order to copy its contents into a spreadsheet.) Year Stock A 2010 2011 2012 2013 2014 2015 -5% 17% 7% - 9% 4% 13% Stock B 12% 19% 27% - 9% - 3% 15% Print Done -