calculate the volatility (standard deviation) of a portfolio that is 58% invested in stock A and 42% in stock B. Using the data in the following table, X Data Table on the icon located on the top-right corner of the data table below in order to copy its contents (Click into a spreadsheet) Year 2010 2011 2012 2013 2014 2015 3% 9% Stock A 1% 17% - 8% 2% Stock B 24% 25% 18% 10% 9% 32% Print Done Check A