Using the data in the following table, LOADING... , calculate the volatility (standard deviation) of a portfolio that is 66% invested in stock A and 34% in stock B.

(Click on the following icon in order to copy its contents into a spreadsheet.) Year Stock A Stock B 2010 - 12% 25% 2011 18% 13% 2012 9% 14% 2013 - 8% - 6% 2014 4% - 9% 2015 9% 29%