Using the data in the following table, calculate the volatility (standard deviation) of a portfolio that is 50% invested in stock A and 50% in stock B The volatility of the portfolio is %. (Round to two decimal places) 1. Data Table (Click on the icon located on the top-right comer of the date table below in order to copy its contents into a spreadsheet) Year Stock A Stock B 2010 - 13% 20% 2011 13% 1% 2012 6% 8% 2013 -7% - 6% 2014 1% -12% 2015 9% 25%