Using the data in the following table, and the fact that the correlation of A and B is 0.24, calculate the volatility (standard deviation) of a portfolio that is 50% invested in stock A and 50% invested in stock B.

Realized Returns
Year	Stock A		Stock B
2008	11%		18%
2009	12%		27%
2010	1%		11%
2011	1%		6%
2012	5%		5%
2013	11%		18%

The standard deviation of the portfolio is enter your response here%. (Round to two decimal places.)